condition	mean	min	max
4 h after light	9.26528	7.12343	12.8009
8 h after light	15.190046666666666	5.78594	22.9575
12 h after light	19.5172	15.5205	25.8007
4 h after dark	20.8405	18.5619	22.3446
8 h after dark	18.9928	13.9252	21.6918
12 h after dark	16.967566666666666	13.4345	20.0897