condition mean min max 4 h after light 8089.0093065 7548.14791 8629.870703 8 h after light 7897.846729999999 7060.38448 8735.30898 12 h after light 7806.838007 7413.446136 8200.229878 4 h after dark 7516.8000365 7032.137247 8001.462826 8 h after dark 6563.1622975 5812.643624 7313.680971 12 h after dark 8017.913682 8017.913682 8017.913682