condition mean min max 0 h after light 0.7700075 0.731454 0.808561 4 h after light 0.8820285 0.719597 1.04446 8 h after light 1.2346375 0.847275 1.622 4 h after dark 1.464815 1.26336 1.66627 8 h after dark 1.0968775000000002 0.926865 1.26689 12 h after dark 0.6970525 0.654905 0.7392