condition mean min max ZT0-3 128.65 128.65 128.65 ZT4-7 93.9 93.9 93.9 ZT8-11 97.0 97.0 97.0 ZT12-15 80.6 80.6 80.6 ZT16-19 84.80000000000001 84.80000000000001 84.80000000000001 ZT20-23 115.94999999999999 115.94999999999999 115.94999999999999