condition mean min max 4 h after light 2.50653 2.49678 2.51628 8 h after light 2.6799049999999998 2.42334 2.93647 12 h after light 3.21796 3.05344 3.38248 4 h after dark 2.8730849999999997 2.7076 3.03857 8 h after dark 3.04285 2.89623 3.18947 12 h after dark 3.326285 3.24131 3.41126