condition mean min max ZT0-3 86.35605000000001 86.35605000000001 86.35605000000001 ZT4-7 58.90904999999999 58.90904999999999 58.90904999999999 ZT8-11 44.97355 44.97355 44.97355 ZT12-15 58.1101 58.1101 58.1101 ZT16-19 84.17105000000001 84.17105000000001 84.17105000000001 ZT20-23 94.1411 94.1411 94.1411