condition mean min max 4 h after light 3.047105 2.91808 3.17613 8 h after light 2.191795 2.12853 2.25506 12 h after light 3.141935 2.83066 3.45321 4 h after dark 3.55173 3.47475 3.62871 8 h after dark 3.9166499999999997 3.85783 3.97547 12 h after dark 3.848725 3.78129 3.91616