y	yhat	residual
1637.7	1171	466.7
1824.6	1491.4	333.2
2030.1	1811.7	218.4
2293.8	2132	161.8
2562.2	2452.3	109.9
2788.1	2772.6	15.5
3126.8	3092.9	33.9
3253.2	3413.3	-160.1
3534.6	3733.6	-199
3930.9	4053.9	-123
4217.5	4374.2	-156.7
4460.1	4694.5	-234.4
4736.4	5014.8	-278.4
5100.4	5335.2	-234.8
5482.1	5655.5	-173.4
5800.5	5975.8	-175.3
5992.1	6296.1	-304