condition mean min max 4 h after light 2487.952166 2042.154415 2933.749917 8 h after light 1974.7004745 1752.105024 2197.295925 12 h after light 2243.820557 2037.078211 2450.562903 4 h after dark 1883.730181 1784.149847 1983.310515 8 h after dark 1581.0029215 1338.30898 1823.696863 12 h after dark 2026.910073 2026.910073 2026.910073