Two Version of Solexa Quality Score Formula

[foolishbrat]

Hi all,


According to Solexa's Manual this

sQ = 10 log10(P/(1-P))

P= probability of base call

And according to Maq is this:

$sQ = -10 * log($e / (1 - $e)) / log(10);

e = probability of base error


Which one is the correct one?

[-daf-]

log10(x)=log(x)/log(10),
e = 1 - P,
log(x)=-log(1/x),
->Maq=Solexa