service_id,date,exception_type
mtwh,20200101,2
mtwh,20211125,2
mtwh,20210906,2
f,20201225,2
sat,20210906,1
sat,20200907,1
mtwh,20200907,2
sat,20210531,1
mtwh,20201126,2
mtwh,20210531,2
mtwh,20200525,2
sat,20200525,1
f,20210101,2
sun,20200704,1
sat,20211225,2
sat,20200704,2
