condition mean min max ZT0-3 63.612255 63.612255 63.612255 ZT4-7 47.235049000000004 47.235049000000004 47.235049000000004 ZT8-11 49.104352000000006 49.104352000000006 49.104352000000006 ZT12-15 57.633084999999994 57.633084999999994 57.633084999999994 ZT16-19 55.052214 55.052214 55.052214 ZT20-23 42.585319 42.585319 42.585319