19? Don't know where that number comes from Sled.
37 is correct, accurate initial launch number. 36 in squadron sized groups. (1 more) ShaknBake launched one in a A6m2 squad (?). making a total of 37.
My quess is either orders were Fubar, or one of the smaller (4 or 5 plane ) units, disregarded their orders. Hoping that is not the case, but would not be overly surprised as units seem to be acting more and more individually lately. That is not the spirit of FSO folks. This is a team operation, and careful planning, delivery, and execution of orders is imperative from all.
EDIT: JG11 was Axis btw, and we requested A6m5b's. We were however assigned A6m2's...and that's what we flew.