condition mean min max ZT0-3 128.55 128.55 128.55 ZT4-7 258.4 258.4 258.4 ZT8-11 279.05 279.05 279.05 ZT12-15 363.25 363.25 363.25 ZT16-19 283.45 283.45 283.45 ZT20-23 192.05 192.05 192.05