condition	mean	min	max
4 h after light	7.71729	7.42375	7.878480000000001
8 h after light	7.926123333333333	7.644939999999999	8.15698
12 h after light	7.630723333333333	7.4447399999999995	7.77435
4 h after dark	7.78559	7.50957	7.95255
8 h after dark	8.089293333333334	7.798210000000001	8.289480000000001
12 h after dark	8.13681	7.9280100000000004	8.3268