condition	mean	min	max
4 h after light	6.900555000000001	6.49512	7.30599
8 h after light	5.296415	4.53666	6.05617
12 h after light	5.697955	5.04412	6.35179
4 h after dark	8.39846	7.37351	9.42341
8 h after dark	8.841304999999998	8.09152	9.59109
12 h after dark	9.174125	8.61753	9.73072