Be Star Atlas Objects page 
Be Star Atlas Home page Target - Common name of target.
Date - Date of observation in the form YYMMDD (YY-Year, MM-Month, DD-Day). This date reflects a UT of local midnight.
ExpT - Exposure time in seconds
Wav1 - Starting wavelength of data (in Angstroms)
Wav2 - Ending wavelength of data (in Angstroms)
HPOL UBVR synthetic filter polarimetry is HPOL spectropolarmetric data passed through synthetic UBVR filter bandpasses as shown below. UBVR synthetic filter wavelength ranges are:
%Q - Stoke's Q parameter in percentage
%U - Stoke's U parameter in percentage
%Err - Percent error for data
%Pol - Percent polarization
PA - Position Angle of polarization in degrees
Cal - Polarization calibration code for identifying specific calibration issues
Comments - Any comments that may be specific to listed data