condition	mean	min	max
4 h after light	21.367994500000002	20.876662	21.859327
8 h after light	19.932620999999997	18.98858	20.876662
12 h after light	15.4169585	13.703956	17.129961
4 h after dark	20.315924	19.805289	20.826559
8 h after dark	23.313032	22.980998	23.645066
12 h after dark	16.881069	16.881069	16.881069