condition mean min max ZT0-3 177.55 177.55 177.55 ZT4-7 159.6 159.6 159.6 ZT8-11 133.10000000000002 133.10000000000002 133.10000000000002 ZT12-15 129.8 129.8 129.8 ZT16-19 159.1 159.1 159.1 ZT20-23 186.85 186.85 186.85