condition mean min max 4 h after light 2.053995 1.74758 2.36041 8 h after light 1.8547449999999999 1.63527 2.07422 12 h after light 1.929695 1.81121 2.04818 4 h after dark 2.167055 2.13569 2.19842 8 h after dark 2.0920050000000003 2.05925 2.12476 12 h after dark 2.244535 2.08735 2.40172