condition mean min max 4 h after light 6.82666 6.31552 7.3378 8 h after light 5.25234 5.21292 5.29176 12 h after light 5.637015 5.18101 6.09302 4 h after dark 8.22186 7.29344 9.15028 8 h after dark 6.556699999999999 6.53935 6.57405 12 h after dark 7.790375000000001 7.05872 8.52203