20+6 victories had claimed in 225 combat sorties and in 35 combats v. LW.
In fact he could destroyed between min. 3 or max. 8 LW's planes. Quite many as for Russian ace on the Far North.
See more in my article (it is Safonov's biography printed in 2010 in Poland, 100 % Polish), quite long story pp 18-26:
http://www.magnum-x.pl/czasopismasec/lw/1313
Regards,
mirekw
PS.
I do not make any scan from my edited work.
On p. 24 is a long table with these full 20+6 Safonov's victories and German losses of course.