condition	mean	min	max
4 h after light	20.18712	9.82816	31.3794
8 h after light	19.468466666666668	10.2224	27.063
12 h after light	8.944310000000002	4.45502	16.103
4 h after dark	14.288	12.4223	16.6019
8 h after dark	12.1669	10.7922	14.7772
12 h after dark	12.09888	9.83734	13.2442