condition	mean	min	max
0 h after light	8.142295	8.07553	8.20906
4 h after light	6.994835	6.44286	7.54681
8 h after light	8.219085	8.19477	8.2434
4 h after dark	8.896764999999998	8.78695	9.00658
8 h after dark	8.66678	8.52029	8.81327
12 h after dark	6.9700050000000005	6.46241	7.4776