condition	mean	min	max
4 h after light	8.2086615	6.735713	9.68161
8 h after light	8.0389965	7.996098	8.081895
12 h after light	8.7963265	8.422138	9.170515
4 h after dark	8.417071	8.300518	8.533624
8 h after dark	7.8219765	7.636593	8.00736
12 h after dark	9.538025	9.538025	9.538025