condition mean min max ZT0-3 179.454 179.454 179.454 ZT4-7 228.656 228.656 228.656 ZT8-11 190.9395 190.9395 190.9395 ZT12-15 137.414 137.414 137.414 ZT16-19 101.3017 101.3017 101.3017 ZT20-23 128.87349999999998 128.87349999999998 128.87349999999998