condition mean min max ZT0-3 9.918354 9.918354 9.918354 ZT4-7 10.1503555 10.1503555 10.1503555 ZT8-11 9.46283 9.46283 9.46283 ZT12-15 10.201497 10.201497 10.201497 ZT16-19 9.605679 9.605679 9.605679 ZT20-23 10.563743500000001 10.563743500000001 10.563743500000001