condition mean min max 4 h after light 33.721 28.8327 38.6093 8 h after light 34.836 32.8204 36.8516 12 h after light 49.9516 48.0556 51.8476 4 h after dark 52.2894 49.0577 53.9394 8 h after dark 52.14243333333333 50.2416 54.8022 12 h after dark 43.539433333333335 38.8372 47.3335