#WMATA's holiday schedule doesn't add up

WMATA's "holiday" schedule on Monday was like politicians' budgets; the math doesn't add up:

@bangnowski @smallz827 our ridership is down compared to a normal weekday. Through 1p today was 189,400 vs 320,400 last Monday
— @wmata (@wmata) November 12, 2012

Rush hour trains are typically 3-4 minutes apart, but this was their plan:

@smallz827 @bangnowski this PM it should be about every 10-12 min.
— @wmata (@wmata) November 12, 2012

So, ridership is down ~1/3 from a normal Monday. But they reduced train service by 2/3.