condition	mean	min	max
4 h after light	3.874135	3.4478	4.30047
8 h after light	3.46706	3.23151	3.70261
12 h after light	4.87873	4.37444	5.38302
4 h after dark	7.510806666666666	7.05145	8.03187
8 h after dark	7.183283333333334	6.14749	7.82573
12 h after dark	6.79352	6.63952	7.08935