Found this when googling for : Clausen 111008
www.fotografie-hundt.de/_me262-db-muster.xlsx
and in google books :
The Me 262 Stormbird: From the Pilots Who Flew, Fought, and Survived It
Colin D. Heaton
p284 for the losses on 17 FEB 1945.
p282 for the loss of Georg-Peter Eder on 22 JAN 1945. Seems that the narrative in Manfred Boehme's JG 7 is mis-dated.