condition mean min max ZT0-3 137.351 137.351 137.351 ZT4-7 119.267 119.267 119.267 ZT8-11 106.253 106.253 106.253 ZT12-15 121.469 121.469 121.469 ZT16-19 152.0925 152.0925 152.0925 ZT20-23 136.04000000000002 136.04000000000002 136.04000000000002