condition	mean	min	max
0 h after light	17.911	17.6283	18.1937
4 h after light	6.504485	5.94423	7.06474
8 h after light	3.814895	3.61472	4.01507
4 h after dark	20.863500000000002	16.3168	25.4102
8 h after dark	29.98235	28.7904	31.1743
12 h after dark	17.89835	17.4689	18.3278