The 1996 UV-B Spectroradiometer Intercomparison was held at 
the Table Mountain Test Facility Boulder, Colorado June 
1996.

Files containing the Vitaltech BW-100 Broadband UV data can be found at the 
NOAA/ERL/ARL/Surface Radiation Research Branch anonymous 
ftp site.

ftp -->       <titan.srrb.noaa.gov>
login as     <anonymous>
password   <your email address>

SITE LOCATION:

Latitude:       40.125 degrees (40, 7', 30") North
Longitude:    105.237 degrees (105, 14', 13.2") West
Elevation:     1,689 m

The directory tree is arranged as follows;

/intecomparison_96/vital/   (Vital BW 100)

The data files are composed of as follows;

ua######.bld          where ###### is the YYMMDD and the .bld extension 
is for the Boulder location.  The ua prefix designates hour averages on the data.
The four columns of data are the decimal time, minimum UV Index, Mean UV
Index, and Maximum UV Index during that hour’s average.

ub######.bld          where ###### is the YYMMDD and the .bld extension 
is for the Boulder location.  The ua prefix designates four hour averages on the
data.  The four columns of data are the decimal time, minimum UV Index, 
Mean UV Index, and Maximum UV Index during that four hour’s average.

uv######.bld          where ###### is the YYMMDD and the .bld extension 
is for the Boulder location.  The uv prefix designates one minute averages on 
the data.  The four columns of data are the decimal time, minimum UV Index, 
Mean UV Index, and Maximum UV Index during that minute’s average.

To convert the data from UV Index to Irradiance (W/mE2), divide the data by 40.