condition mean min max 4 h after light 647.738123 627.52464 667.951606 8 h after light 446.22277149999996 297.307148 595.138395 12 h after light 371.083402 222.715548 519.451256 4 h after dark 119.4885085 25.807089 213.169928 8 h after dark 50.8977295 23.554322 78.241137 12 h after dark 424.045611 424.045611 424.045611