condition mean min max ZT0-3 74.40675 74.40675 74.40675 ZT4-7 77.72460000000001 77.72460000000001 77.72460000000001 ZT8-11 77.3775 77.3775 77.3775 ZT12-15 88.99905000000001 88.99905000000001 88.99905000000001 ZT16-19 73.33070000000001 73.33070000000001 73.33070000000001 ZT20-23 96.4031 96.4031 96.4031