condition	mean	min	max
0 h after light	7.646604999999999	7.39324	7.89997
4 h after light	7.371875	6.72024	8.02351
8 h after light	21.33935	20.6826	21.9961
4 h after dark	17.851599999999998	16.1938	19.5094
8 h after dark	8.23259	8.22435	8.24083
12 h after dark	7.372795	5.71564	9.02995