condition mean min max 4 h after light 97.618579 47.716676 147.520482 8 h after light 198.8648435 176.703387 221.0263 12 h after light 238.616256 217.987526 259.244986 4 h after dark 383.590185 337.612674 429.567696 8 h after dark 304.1283215 262.001903 346.25474 12 h after dark 49.181608 49.181608 49.181608