condition mean min max ZT0-3 61.163159889166664 58.018997023333334 64.307322755 ZT4-7 61.98001120166667 61.084142373333336 62.875880030000005 ZT8-11 65.16303488 62.49808487 67.82798489 ZT12-15 74.57040495333334 71.83599822 77.30481168666667 ZT16-19 69.01871145166668 66.42909761333334 71.60832529000001 ZT20-23 66.86450824833332 65.95072074666666 67.77829575