condition mean min max ZT0-3 104.6505 104.6505 104.6505 ZT4-7 106.1605 106.1605 106.1605 ZT8-11 71.1387 71.1387 71.1387 ZT12-15 33.7087 33.7087 33.7087 ZT16-19 17.515050000000002 17.515050000000002 17.515050000000002 ZT20-23 83.34545 83.34545 83.34545