condition	mean	min	max
0 h after light	15.75845	14.6939	16.823
4 h after light	7.88512	7.66422	8.10602
8 h after light	8.159985	8.01293	8.30704
4 h after dark	9.468715	8.93363	10.0038
8 h after dark	10.9827	10.2503	11.7151
12 h after dark	13.151	11.2785	15.0235