condition	mean	min	max
0 h after light	19.740850000000002	19.332	20.1497
4 h after light	11.33295	10.8616	11.8043
8 h after light	6.3445350000000005	6.14964	6.53943
4 h after dark	10.214755	8.51601	11.9135
8 h after dark	15.43285	14.5597	16.306
12 h after dark	23.347450000000002	22.7043	23.9906