condition mean min max 4 h after light 8.30198 8.24729 8.345839999999999 8 h after light 8.078973333333334 7.9371 8.27876 12 h after light 7.963826666666666 7.83167 8.170539999999999 4 h after dark 8.077876666666667 8.0175 8.145769999999999 8 h after dark 8.239986666666667 8.11962 8.32158 12 h after dark 7.909389999999999 7.827999999999999 7.982239999999999