condition	mean	min	max
4 h after light	13.917	10.0909	18.9897
8 h after light	8.94133	2.60538	16.6977
12 h after light	10.47278	6.80252	15.8058
4 h after dark	15.788133333333334	11.8437	19.9035
8 h after dark	16.0807	12.5613	19.3594
12 h after dark	13.303166666666666	11.9394	14.4907