302 could be because there are some buses operating on 302A then
coming off service to CCK and operating as 302. So it is possible
to miss some buses. 300 is pretty straight forward.
Unless in 15 duties, 3 are crossover duties where they do only
one trip of svc 300 (mostly AM), because PM Im pretty sure I saw
only 12 buses.
If you can, confirm because I don't think I'll be back in CCK
area anytime soon. Also 983 def had more than 3 DDs. So not sure if
983 has again got some DD upgrade
Probably some of the AP buses were not running when u were
spotting becos of mealbreak.. PM shift usually have mealbreak
during peak hours while split shift replace them.. anyway someone
edit in the wiki put a note that 300 have at least 10AP 3S1 2S2 so
yeah
For 983 i think got split shift add