condition mean min max 4 h after light 1.50341 1.12646 2.07461 8 h after light 1.636981 0.647643 2.56146 12 h after light 2.4333633333333333 1.24588 3.03032 4 h after dark 2.83561 2.45702 3.12053 8 h after dark 2.20079 1.23988 2.75456 12 h after dark 1.65017 1.2731 2.00759