service_id,date,exception_type
w,20110905,2
tf,20110905,2
muw,20110905,2
mutf,20110905,2
muwtf_merged_998805,20110905,2
s_merged_998804,20110905,1
s_merged_998804,20111010,1
w,20111010,2
tf,20111010,2
muw,20111010,2
mutf,20111010,2
muwtf_merged_998805,20111010,2