condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0775755 0.0 0.310302 3 h after dark 0.0 0.0 0.0 6 h after dark 0.13277733333333333 0.0 0.398332 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0