condition	mean	min	max
4 h after light	9.74343	9.599910000000001	9.85565
8 h after light	9.668693333333334	9.41276	9.87502
12 h after light	9.648573333333333	9.49306	9.82681
4 h after dark	9.49634	9.11364	9.699639999999999
8 h after dark	9.449906666666667	9.141760000000001	9.63663
12 h after dark	9.470243333333332	9.151869999999999	9.64352