condition	mean	min	max
4 h after light	8.149996666666667	8.04556	8.212110000000001
8 h after light	7.9342966666666666	7.8032699999999995	8.10283
12 h after light	8.676409999999999	8.60619	8.74702
4 h after dark	8.494513333333332	8.34522	8.615689999999999
8 h after dark	8.361886666666667	8.17425	8.68506
12 h after dark	8.36638	8.34393	8.40686