condition mean min max ZT0-3 46.6376 46.6376 46.6376 ZT4-7 39.09495 39.09495 39.09495 ZT8-11 30.28965 30.28965 30.28965 ZT12-15 41.997 41.997 41.997 ZT16-19 53.9889 53.9889 53.9889 ZT20-23 50.3913 50.3913 50.3913