bill_length survival 19.60313138 no 19.80530973 no 20.03733346 no 20.1894486 no 20.44404357 no 20.58257318 no 20.74057182 no 20.89033356 no 21.03710007 no 21.17915978 no 21.33007148 no 21.47568803 no 21.62716133 no 21.77991831 no 21.94016338 no 22.0860741 no 22.23669163 no 22.37875134 no 22.53022464 no 22.67527959 no 22.82675289 no 22.97950987 no 23.13975494 no 23.28951668 no 23.43628319 no 23.5783429 no 23.72925459 no 23.87487115 no 24.02634445 no 24.1713994 no 24.30040844 no 24.49584752 no 24.69802587 no 25.0012934 no 19.70422056 yes 19.89965963 yes 20.13047992 yes 20.223145 yes 20.39836624 yes 20.62918652 yes 20.77480307 yes 20.94275017 yes 21.08442478 yes 21.23927842 yes 21.38904016 yes 21.53580667 yes 21.67786638 yes 21.82933969 yes 21.98209666 yes 22.12586794 yes 22.27862491 yes 22.43886998 yes 22.5785228 yes 22.73539823 yes 22.87745794 yes 23.02893125 yes 23.18168822 yes 23.3254595 yes 23.47821647 yes 23.63846154 yes 23.77811436 yes 23.93498979 yes 24.02409803 yes 24.24649421 yes 24.32736555 yes 25.0012934 yes 25.24390742 yes 25.32477876 yes