condition mean min max 4 h after light 0.02653515 0.0 0.0530703 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0227989 0.0 0.0455978 12 h after dark 0.0 0.0 0.0