condition mean min max 0 h after light 1.0525 0.8411 1.2639 4 h after light 0.8500845 0.414639 1.28553 8 h after light 0.734132 0.428094 1.04017 4 h after dark 2.27495 1.65866 2.89124 8 h after dark 2.07793 1.67072 2.48514 12 h after dark 1.437495 1.04996 1.82503