condition	mean	min	max
4 h after light	7.63986	7.47709	7.80263
8 h after light	6.6904900000000005	6.45272	6.92826
12 h after light	5.83934	5.56977	6.10891
4 h after dark	7.15526	5.86738	8.44314
8 h after dark	6.91749	6.74189	7.09309
12 h after dark	7.425825	7.12289	7.72876