condition mean min max 4 h after light 6.9543099999999995 6.56087 7.34775 8 h after light 5.04184 5.01817 5.06551 12 h after light 7.135415 6.38633 7.8845 4 h after dark 8.860586666666666 8.05937 9.67831 8 h after dark 9.148769999999999 8.84504 9.35714 12 h after dark 8.18783 7.46648 8.86028