condition	mean	min	max
4 h after light	7.971317000000001	7.941465	8.001169
8 h after light	8.028124	7.941465	8.114783
12 h after light	8.4069625	8.115156	8.698769
4 h after dark	8.1964595	8.099378	8.293541
8 h after dark	8.819776000000001	8.335604	9.303948
12 h after dark	8.782575	8.782575	8.782575