condition	mean	min	max
4 h after light	9.410385	8.07777	10.743
8 h after light	7.39436	7.12885	7.65987
12 h after light	8.40488	8.20148	8.60828
4 h after dark	11.434056666666667	9.74997	13.0752
8 h after dark	12.737133333333334	11.7811	14.5029
12 h after dark	9.645723333333333	9.19616	9.89862