condition	mean	min	max
4 h after light	48.9417	41.3032	56.5802
8 h after light	18.2638	17.8398	18.6878
12 h after light	18.81095	18.1771	19.4448
4 h after dark	34.5628	32.6668	35.8642
8 h after dark	56.2132	53.2624	60.5183
12 h after dark	64.9209	61.2957	69.967