condition	mean	min	max
4 h after light	10.333006666666666	8.80832	13.2464
8 h after light	8.93341	2.96323	13.1158
12 h after light	10.87945	7.01615	14.8364
4 h after dark	16.9238	15.956	17.6058
8 h after dark	19.3428	17.5982	20.9409
12 h after dark	13.785833333333333	13.0772	14.3802