condition mean min max ZT0-3 149.0 149.0 149.0 ZT4-7 232.4 232.4 232.4 ZT8-11 233.8 233.8 233.8 ZT12-15 179.65 179.65 179.65 ZT16-19 143.35000000000002 143.35000000000002 143.35000000000002 ZT20-23 133.9 133.9 133.9