condition	mean	min	max
4 h after light	3.19184	1.41003	4.97365
8 h after light	10.089575	6.93885	13.2403
12 h after light	20.101399999999998	19.6859	20.5169
4 h after dark	19.4683	15.585	23.3516
8 h after dark	12.550055	8.00671	17.0934
12 h after dark	7.11589	6.06353	8.16825