condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0211376 0.0 0.0422752 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.009599566666666667 0.0 0.0287987