January.a	January.b	February.a	February.b
AnQing	1.8	7.1	2.1	7.2
BaoDing	-7.1	1.7	-5.3	4.8
BeiJing	-7.2	2.1	-5.9	3.8
BoKeTu	-23.4	-15.5	-24	-14
ChangChun	-16.9	-6.7	-17.6	-6.8