condition	mean	min	max
4 h after light	6.844383333333334	4.61596	8.24642
8 h after light	4.71394	1.08979	8.16919
12 h after light	7.03151	4.08067	10.8411
4 h after dark	13.08502	9.53306	15.3578
8 h after dark	19.0458	13.0279	24.0313
12 h after dark	17.689	16.809	18.8584