<html><head><style>body{font-family:Helvetica,Arial;font-size:13px}</style></head><body style="word-wrap:break-word;line-break:after-white-space"><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">Hello Mary, thanks for the explanation, points well taken. </div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto"><br></div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">@Dennis thanks for the script and further clarity.</div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto"><br></div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">I am having a look and will let you know of the progress.</div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto"><br></div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">Best regards</div><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">Kwesi</div><p class="airmail_on">On 17 November 2018 at 23:40:52, Dennis Shea (<a href="mailto:shea@ucar.edu">shea@ucar.edu</a>) wrote:</p> <blockquote type="cite" class="clean_bq"><span><div><div></div><div>


<title></title>


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<div>[1] Mary is correct. The sample file is using a
<b>rectilinear</b> grid. Hence, NCL's <b>coordinate
subscripting</b> ( <b>{...}</b> ) can be used.</div>
<div><br></div>
<div>[2] The grid for
'tos_Omon_IPSL-CM5A-LR_historical_r1i1p1_185001-200512.nc is
<b>curvilinear.</b> Mary offered one appraoch.  Here is
another approach.<br>
<br>
  f       =
<b>addfile</b>("tos_Omon_IPSL-CM5A-LR_historical_r1i1p1_185001-200512.nc"
,"r")<br>
  x       = f->tos
               
     ; (ntim,nlat,mlon)<br>
  lat2d =
f->lat                      
; (nlat,mlon)<br>
  lon2d = f->lon<br>
<br>
;---Set all values outside of NINO-3.4 region to _FillValue<br>
<br>
  LAT2D = <b>conform</b>(x, lat2d, (/1,2/))   ;
(ntim,nlat,mlon)<br>
  LON2D = <b>conform</b>(x, lon2d, (/1,2/))   ;
(ntim,nlat,mlon)<br>
<br>
  x     = where(LAT2D.ge.latS .and.
LAT2D.le.latN .and. \<br>
               
LON2D.ge.lonL .and.
LON2D.le.lonR       \<br>
              
,x, x@_FillValue)<br>
  delete( [/ LAT2D, LON2D /]
)         ; no longer
needed<br></div>
<div><br></div>
<div>is a curvilinear grid.</div>
<div><br></div>
<div><span style="color:rgb(0,0,255)"><b>The rest is almost
identical to the example.</b></span></div>
<div><br></div>
<div>;---Create a monthly climatology<br>
<br>
  xClm  = clmMonTLL(x)<br>
 
printVarSummary(xClm)               
; (nmos,nlat,mlon)<br>
  printMinMax(xClm,0)<br>
  print("---")<br>
<br>
;---Calculate anomalies at each grid point<br>
<br>
  xAnom =  calcMonAnomTLL(x, xClm)<br>
 
printVarSummary(xAnom)              
; (ntim,nlat,mlon)<br>
  printMinMax(xAnom,0)<br>
  print("---")<br>
<br>
;---Weighted areal averages & anomalies (time series)<br>
;---Really: No need to weight ... small latitudinal extent<br>
<br>
  wgt2      =
cos(0.01745329*lat2d)    ; (nlat,mlon)<br>
<br>
  xAvg      = wgt_areaave2(x, wgt2,
0)<br>
  copy_VarCoords(x(:,0,0), xAvg)<br>
  xAvg@long_name = "NONO34 areal avg"<br>
 
printVarSummary(xAvg)               
; (ntim)<br>
  printMinMax(xAvg,0)<br>
  print("---")<br>
<br>
  xAnomAvg = wgt_areaave2(xAnom, wgt2, 0)   ;
(ntim)<br>
  copy_VarCoords(x(:,0,0), xAnomAvg)<br>
  xAnomAvg@long_name = <b>"NINO34</b> areal avg anomalies:
ENSO34 Index"<br>
  printVarSummary(xAnomAvg)<br>
  printMinMax(xAnomAvg,0)<br>
  print("---")<br>
<br>
;---Compute standardized anomalies<br>
<br>
  xAnomStd =
xAnomAvg/stddev(xAnomAvg)      ;
(ntim)<br>
  copy_VarCoords(xAnomAvg, xAnomStd)<br>
  xAnomStd@long_name = "<b>Standardized NINO34</b>"<br>
  printVarSummary(xAnomStd)<br>
  printMinMax(xAnomStd,0)<br>
  print("---")<br>
<br></div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Sat, Nov 17, 2018 at 3:59 PM Mary Haley
<<a href="mailto:haley@ucar.edu">haley@ucar.edu</a>>
wrote:<br></div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div dir="ltr">
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<div class="gmail_default" style="font-size:small">Dear
Kwesi,</div>
<div class="gmail_default" style="font-size:small"><br></div>
<div class="gmail_default" style="font-size:small">You didn't
provide a script, but my guess is that you are trying to subscript
your data array using latitude / longitude coordinates, similar to
this line which was in the original script:</div>
<div class="gmail_default" style="font-size:small"><br></div>
<div class="gmail_default">  X      =
mon_fullyear( in->SST(:,{latS:latN},{lonL:lonR}),
0)  </div>
<div class="gmail_default" style="font-size:small"><br></div>
<div class="gmail_default" style="font-size:small">The original
example was written for data on a rectilinear lat/lon grid that has
latitude/longitude coordinate arrays.</div>
<div class="gmail_default" style="font-size:small"><br></div>
<div class="gmail_default" style="font-size:small">Your data is
curvilinear, which means it is represented by 2D lat/lon
arrays.  It does have coordinate arrays attached to it, but
they are simply integer indexes and NOT lat/lon coordinate
arrays:</div>
<div class="gmail_default" style="font-size:small"><br></div>
<div class="gmail_default">
<div class="gmail_default" style="font-size:small">   
   int j(j) ;</div>
<div class="gmail_default" style="font-size:small">   
            j:units = "1" ;</div>
<div class="gmail_default" style="font-size:small">   
            j:long_name = "cell index
along second dimension" ;</div>
<div class="gmail_default" style="font-size:small">   
    int i(i) ;</div>
<div class="gmail_default" style="font-size:small">   
            i:units = "1" ;</div>
<div class="gmail_default" style="font-size:small">   
            i:long_name = "cell index
along first dimension" ;</div>
<div class="gmail_default" style="font-size:small"><br></div>
<div class="gmail_default" style="font-size:small">If you need to
subset your data using lat/lon coordinates, you will need to either
use the <a href="http://www.ncl.ucar.edu/Document/Functions/Contributed/getind_latlon2d.shtml" target="_blank">getind_latlon2d</a> function or the <a href="http://www.ncl.ucar.edu/Document/Functions/Contributed/region_ind.shtml" target="_blank">region_ind</a> function.  You can see some
examples at:</div>
<div class="gmail_default" style="font-size:small"><br></div>
<div class="gmail_default"><a href="http://www.ncl.ucar.edu/Applications/latlon_subset.shtml" target="_blank">http://www.ncl.ucar.edu/Applications/latlon_subset.shtml</a><br>
</div>
<div class="gmail_default"><br></div>
<div class="gmail_default">Look at either latlon_subset_2.ncl or
latlon_subset_3.ncl.</div>
<div class="gmail_default"><br></div>
<div class="gmail_default">Good luck,</div>
<div class="gmail_default"><br></div>
<div class="gmail_default">--Mary</div>
<div class="gmail_default"><br></div>
</div>
</div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Sat, Nov 17, 2018 at 7:57 AM Kwesi A. Quagraine
<<a href="mailto:starskykwesi@gmail.com" target="_blank">starskykwesi@gmail.com</a>> wrote:<br></div>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word;line-break:after-white-space">
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
Hello Nclers,</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
<br></div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
I am experiencing an error when calculating Nino34 index (<a href="https://www.ncl.ucar.edu/Applications/Scripts/indices_nino_1.ncl" style="margin:0px;padding:0px;text-decoration:none;color:rgb(133,45,133);font-family:verdana,sans-serif;font-size:13.3333px;font-variant-ligatures:normal" target="_blank">indices_nino_1.ncl</a>) using CMIP5 models; The
error message is; fatal:Coordinate subscript type mismatch.
Subscript (2) can not be coerced to type of coordinate variable,
subscript (0).</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
<br></div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
Ncdump of file gives;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
<br></div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">netcdf
tos_Omon_IPSL-CM5A-LR_historical_r1i1p1_185001-200512 {</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">dimensions:</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        time = UNLIMITED ;
// (1872 currently)</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        j = 149 ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        i = 182 ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        bnds = 2 ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        vertices = 4 ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">variables:</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        double time(time)
;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  time:bounds = "time_bnds" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  time:units = "days since 1850-01-01 00:00:00" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  time:calendar = "noleap" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  time:axis = "T" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  time:long_name = "time" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  time:standard_name = "time" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        double
time_bnds(time, bnds) ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        int j(j) ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  j:units = "1" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  j:long_name = "cell index along second dimension" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        int i(i) ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  i:units = "1" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  i:long_name = "cell index along first dimension" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        float lat(j, i)
;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  lat:standard_name = "latitude" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  lat:long_name = "latitude coordinate" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  lat:units = "degrees_north" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  lat:bounds = "lat_vertices" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        float lon(j, i)
;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  lon:standard_name = "longitude" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  lon:long_name = "longitude coordinate" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  lon:units = "degrees_east" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  lon:bounds = "lon_vertices" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        float
lat_vertices(j, i, vertices) ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  lat_vertices:units = "degrees_north" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        float
lon_vertices(j, i, vertices) ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  lon_vertices:units = "degrees_east" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">        float tos(time, j,
i) ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:standard_name = "sea_surface_temperature" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:long_name = "Sea Surface Temperature" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:comment = "\"this may differ from \"\"surface
temperature\"\" in regions of sea ice.\"" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:units = "K" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:original_name = "sosstsst" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:original_units = "degC" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:history = "2011-07-04T20:18:27Z altered by CMOR:
Converted units from \'degC\' to \'K\'. 2011-07-04T20:18:27Z
altered by CMOR: replaced missing value flag (9.96921e+36) with
standard missing value (1e+20)." ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:cell_methods = "time: mean (interval: 30 minutes)"
;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:cell_measures = "area: areacello" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:missing_value = 1.e+20f ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:_FillValue = 1.e+20f ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:associated_files = "baseURL: <a href="http://cmip-pcmdi.llnl.gov/CMIP5/dataLocation" target="_blank">http://cmip-pcmdi.llnl.gov/CMIP5/dataLocation</a>
gridspecFile: gridspec_ocean_fx_IPSL-CM5A-LR_historical_r0i0p0.nc
areacello: areacello_fx_IPSL-CM5A-LR_historical_r0i0p0.nc" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  tos:coordinates = "lat lon" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px"><br></div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">// global attributes:</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  :institution = "IPSL (Institut Pierre Simon Laplace, Paris,
France)" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  :institute_id = "IPSL" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="margin:0px">             
  :experiment_id = "historical" ;</div>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px;color:rgba(0,0,0,1.0);margin:0px;line-height:auto">
                :source =
"IPSL-CM5A-LR (2010) : atmos : LMDZ4 (LMDZ4_v5, 96x95x39); ocean :
ORCA2 (NEMOV2_3, 2x2L31); seaIce : LIM2 (NEMOV2_3); ocnBgchem :
PISCES (NEMO: </div>
<div><br></div>
Any help on this will be much appreciated. Thanks in advance.
<div><br></div>
<div>Best regards</div>
<div>Kwesi<br>
<div id="m_-6921124206613245622m_-7990664746149633535bloop_sign_1542465931437791744" class="m_-6921124206613245622m_-7990664746149633535bloop_sign">
<font face="helvetica, arial">------------ </font><br>
<div style="font-family:helvetica,arial;font-size:13px">Try not to
become a man of success but rather a man of value- Albert
Einstein</div>
<div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px"><br></span></font></div>
<div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px">Kwesi A.
Quagraine</span></font></div>
<div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px">Department of
Physics</span></font></div>
<div><font face="Helvetica"><span style="font-size:12px">School
of Physical Sciences</span></font></div>
<div><font face="Helvetica"><span style="font-size:12px">College
of Agriculture and Natural Sciences</span></font></div>
<div><font face="Helvetica"><span style="font-size:12px">University
of Cape Coast</span></font></div>
<div><font face="Helvetica"><span style="font-size:12px">Cape
Coast, Ghana</span></font></div>
<div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px"><br></span></font></div>
<div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px">Alt. Email: <a href="mailto:kwesi@csag.uct.ac.za" target="_blank">kwesi@csag.uct.ac.za</a> </span></font></div>
<div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px">Web: <a href="http://www.recycleupghana.org/" target="_blank">http://www.recycleupghana.org/</a> <br></span></font></div>
<div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px">Office: +27 21 650
3164</span></font></div>
<div><font face="Helvetica"><span style="font-size:12px">Skype:
quagraine_cwasi</span></font></div>
</div>
</div>
</div>
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</blockquote>
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</div></div></span></blockquote> <div id="bloop_sign_1542527249403109120" class="bloop_sign"><font face="helvetica, arial">------------ </font><br><div style="font-family:helvetica,arial;font-size:13px">Try not to become a man of success but rather a man of value- Albert Einstein</div><div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px"><br></span></font></div><div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px">Kwesi A. Quagraine</span></font></div><div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px">Department of Physics</span></font></div><div><font face="Helvetica"><span style="font-size:12px">School of Physical Sciences</span></font></div><div><font face="Helvetica"><span style="font-size:12px">College of Agriculture and Natural Sciences</span></font></div><div><font face="Helvetica"><span style="font-size:12px">University of Cape Coast</span></font></div><div><font face="Helvetica"><span style="font-size:12px">Cape Coast, Ghana</span></font></div><div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px"><br></span></font></div><div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px">Alt. Email: <a href="mailto:kwesi@csag.uct.ac.za">kwesi@csag.uct.ac.za</a> </span></font></div><div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px">Web: <a href="http://www.recycleupghana.org/">http://www.recycleupghana.org/</a> <br></span></font></div><div style="font-family:helvetica,Arial;font-size:13px"><font face="Helvetica"><span style="font-size:12px">Office: +27 21 650 3164</span></font></div><div><font face="Helvetica"><span style="font-size:12px">Skype: quagraine_cwasi</span></font></div></div></body></html>