group	income	city	count
1	u10	1	70
2	u10	2	62
3	10_20	1	52
4	10_20	2	63
5	20_25	1	69
6	20_25	2	50
7	25_35	1	22
8	25_35	2	19
9	35up	1	28
10	35up	2	24