x1.	x2	y	Brightness....	Contrast....	Useful.range..ng.
13	11	62.8739	54	56	96
15	11	76.1328	61	80	50
13	13	87.4667	65	70	50
15	13	102.3236	100	50	112
14	12	76.1872	100	65	96
14	12	77.5287	100	80	80
14	12	76.7824	50	25	155
14	12	77.4381	57	35	144
14	12	78.7417	54	26	255