"service_id","date","exception_type"
"1521-CR-FoxboroWalpoleShuttle-Weekday","20260326","2"
"1521-FALL 2025-N-Weekday-1-266Haverhill-S6d","20260403","1"
"1521-FALL 2025-SOUTHSS-Weekend-1A-BsUpd","20260404","1"
