condition mean min max 4 h after light 426.638424 365.247472 488.029376 8 h after light 357.865112 291.31427 424.415954 12 h after light 376.7234895 362.001288 391.445691 4 h after dark 378.2386855 362.170755 394.306616 8 h after dark 322.2218835 300.046656 344.397111 12 h after dark 452.562328 452.562328 452.562328