condition	mean	min	max
4 h after light	7.512746666666667	7.2474300000000005	7.8841399999999995
8 h after light	8.845163333333334	8.453389999999999	9.20761
12 h after light	8.61045	8.31498	8.80893
4 h after dark	8.05617	7.717060000000001	8.32268
8 h after dark	7.73933	7.5532699999999995	7.967219999999999
12 h after dark	7.21443	6.93664	7.4841