condition mean min max ZT0-3 32.868399999999994 32.62 33.1168 ZT4-7 62.4965 62.4965 62.4965 ZT8-11 40.4439 40.4439 40.4439 ZT12-15 0 0 0 ZT16-19 14.27195 14.27195 14.27195 ZT20-23 19.2412 19.2412 19.2412