condition mean min max ZT0-3 42.441116 42.441116 42.441116 ZT4-7 38.869755 38.869755 38.869755 ZT8-11 41.51844 41.51844 41.51844 ZT12-15 46.0108355 46.0108355 46.0108355 ZT16-19 45.15748 45.15748 45.15748 ZT20-23 44.969566 44.969566 44.969566