condition	mean	min	max
4 h after light	7.036856666666667	6.8834100000000005	7.2782800000000005
8 h after light	7.654803333333334	7.42375	7.91438
12 h after light	7.698799999999999	7.60628	7.839239999999999
4 h after dark	8.36056	8.31222	8.39625
8 h after dark	8.006383333333332	7.814989999999999	8.28669
12 h after dark	7.034813333333333	6.90181	7.16904