condition	mean	min	max
0 h after light	13.50755	13.311	13.7041
4 h after light	16.218799999999998	13.8134	18.6242
8 h after light	8.549935	8.0968	9.00307
4 h after dark	12.277149999999999	10.3673	14.187
8 h after dark	16.86895	15.9853	17.7526
12 h after dark	14.67425	13.8006	15.5479