condition	mean	min	max
4 h after light	4.07998	3.79974	4.36022
8 h after light	2.519485	2.48821	2.55076
12 h after light	2.0086500000000003	1.8413	2.176
4 h after dark	4.887085	4.75702	5.01715
8 h after dark	4.482645	4.46975	4.49554
12 h after dark	5.2812	4.95051	5.61189