condition	mean	min	max
4 h after light	6.99856	6.84492	7.297860000000001
8 h after light	7.411746666666667	7.26625	7.6155
12 h after light	7.6478399999999995	7.50167	7.814839999999999
4 h after dark	7.533633333333333	7.281039999999999	7.9600100000000005
8 h after dark	7.465293333333333	7.16218	7.64848
12 h after dark	7.086309999999999	6.919239999999999	7.2268