condition mean min max ZT0-3 8.412 8.412 8.412 ZT4-7 10.33272 10.33272 10.33272 ZT8-11 4.348155 4.348155 4.348155 ZT12-15 4.61346 4.61346 4.61346 ZT16-19 11.387995 11.387995 11.387995 ZT20-23 3.55281 3.55281 3.55281