condition	mean	min	max
4 h after light	9.674876666666666	9.40582	10.066289999999999
8 h after light	9.114563333333333	8.72316	9.61759
12 h after light	8.401716666666667	8.00371	8.77106
4 h after dark	8.19668	7.674110000000001	8.57911
8 h after dark	8.51998	8.294880000000001	8.917689999999999
12 h after dark	9.17424	8.81255	9.6136