condition	mean	min	max
4 h after light	8.123366666666666	8.0276	8.25489
8 h after light	8.17699	8.11872	8.282680000000001
12 h after light	8.219560000000001	7.97763	8.41455
4 h after dark	8.542456666666666	8.42615	8.70346
8 h after dark	8.512306666666666	8.422889999999999	8.60016
12 h after dark	8.64639	8.499089999999999	8.796710000000001