condition	mean	min	max
4 h after light	8.589466666666667	8.47151	8.73387
8 h after light	8.651313333333334	8.46256	8.75965
12 h after light	8.53477	8.42477	8.65578
4 h after dark	8.47472	8.29729	8.60256
8 h after dark	8.417720000000001	8.14888	8.597430000000001
12 h after dark	8.524613333333333	8.47569	8.56758