condition mean min max 0 h after light 0.0798505 0.0 0.159701 2 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.229091 0.0 0.458182 4 h after dark 0.0 0.0 0.0 8 h after dark 0.083429 0.0 0.166858 12 h after dark 0.0 0.0 0.0