condition mean min max ZT0-3 26.3152159 21.44018695 31.19024485 ZT4-7 33.556111425 32.57172244 34.54050041 ZT8-11 53.182833665000004 35.92108264 70.44458469 ZT12-15 147.2644675125 143.57944527499998 150.94948975 ZT16-19 123.57694686250002 112.58936032500002 134.56453340000002 ZT20-23 77.362394655 72.02306555 82.70172376