condition	mean	min	max
4 h after light	8565.717222333333	8170.14	9302.055
8 h after light	8617.980555666667	8313.785	9021.726667
12 h after light	8207.447777666666	7043.3	9425.19
1.5 h after dark	8816.548888	6843.006667	10510.01333
5.5 h after dark	8654.203333333333	6732.923333	9817.16
9.5 h after dark	7936.571111333334	6364.366667	9704.476667