condition mean min max 4 h after light 0.049681 0.0 0.099362 8 h after light 0.0 0.0 0.0 12 h after light 0.1892765 0.0 0.378553 4 h after dark 0.0558015 0.0 0.111603 8 h after dark 6.65e-07 0.0 1.33e-06 12 h after dark 0.24243835 0.0847947 0.400082