Echoview can derive the following variables from .sfd files:
Sv raw pings Tt
TS raw pings Tt
angular position raw pings Tt
position GPS fixes
t = the transducer number (1 to 9)
Calibration settings for SciFish data SciFish data files
Echoview Help file 5.2.21 for Echoview 5.2.55 Monday 21st May 2012
Please report any errors or omissions to support@echoview.com.