condition mean min max 4 h after light 0.8579345 0.641459 1.07441 8 h after light 0.805782 0.722057 0.889507 12 h after light 1.1068655 0.979711 1.23402 4 h after dark 2.40221 2.10975 2.86727 8 h after dark 1.8726966666666667 1.35017 2.26611 12 h after dark 1.1642 1.00209 1.38503