condition	mean	min	max
0 h after light	21.360500000000002	20.5057	22.2153
4 h after light	16.81895	14.889	18.7489
8 h after light	18.740250000000003	17.8834	19.5971
4 h after dark	15.9795	15.3322	16.6268
8 h after dark	16.411	14.7214	18.1006
12 h after dark	21.27035	20.6962	21.8445