condition	mean	min	max
0 h after light	8.603010000000001	8.49283	8.71319
4 h after light	6.371175	6.31865	6.4237
8 h after light	6.38256	6.21288	6.55224
4 h after dark	6.29826	4.93403	7.66249
8 h after dark	7.25748	6.93858	7.57638
12 h after dark	8.30681	7.285	9.32862