condition mean min max 4 h after light 5.81039 5.605 5.94591 8 h after light 5.942703333333334 5.8247800000000005 6.053640000000001 12 h after light 5.850546666666666 5.67554 5.98655 4 h after dark 5.580156666666667 5.4911 5.6304300000000005 8 h after dark 5.595936666666667 5.49786 5.6462900000000005 12 h after dark 5.5898900000000005 5.567880000000001 5.62207