condition	mean	min	max
4 h after light	18.230673	15.135129	21.326217
8 h after light	21.4068975	21.326217	21.487578
12 h after light	19.9687895	16.007656	23.929923
4 h after dark	25.4354385	21.326217	29.54466
8 h after dark	21.669762499999997	20.857134	22.482391
12 h after dark	18.208758	18.208758	18.208758