condition mean min max ZT0-3 91.201975 87.3253 95.07865 ZT4-7 90.80189999999999 90.80189999999999 90.80189999999999 ZT8-11 104.4665 104.4665 104.4665 ZT12-15 0 0 0 ZT16-19 104.6905 104.6905 104.6905 ZT20-23 107.8765 107.8765 107.8765