condition mean min max 2 h after light 1.960187 0.449762 4.06863 6 h after light 2.567909333333333 0.48501 6.30335 10 h after light 0.9396576666666667 0.0 1.65511 14 h after light 2.3273025 0.834495 3.78439 18 h after light 0.64511 0.0 1.40692 2 h after dark 1.3554241666666667 0.401015 2.28504