condition	mean	min	max
4 h after light	9.55387	9.21048	9.89726
8 h after light	9.11319	7.52498	10.7014
12 h after light	9.18291	7.28292	11.0829
4 h after dark	12.779066666666667	11.5313	13.7579
8 h after dark	20.7704	19.3683	23.2747
12 h after dark	21.9178	20.7619	23.074