Pure static, from Route_S02.tbl. Only THREE routes in the entire stage are kind
'A', all in phase 1 -- ADT102, ADT107, ADT113 -- and every one is a
UN_e010_ADAN_Attacker_S squadron of n=4. The fourth phase-1 e010 squadron,
ADS151, is kind 'F'.
Their first-keyframe times are t=0, t=120 and t=210, so counting only the 'A'
squadrons predicts the counter exactly: 004 at entry, 008 at t=120, 012 at t=210,
and never above 012 in phase 1. That is what every run has shown -- starting
value, step size and ceiling all fall out of the disc with nothing fitted.
It also explains the two awkward observations: the fifteen-minute hold at 012 (all
'A' squadrons arrived, and those kills were turrets), and why 016 never appeared.
The earlier prediction of a 016 cap is WITHDRAWN: ADS151 is an F route and is not
counted, so the ceiling is 12.
Kept 🟡: "A = marked attack objective" is inference from three routes in one
stage, consistent with the mission dialogue and with A appearing only in early
phases, but the letter's meaning is not proven and the kill test is still unrun.