condition mean min max ZT0-3 47.815062405 46.771118869999995 48.85900594 ZT4-7 40.756608655 37.30254309 44.21067422 ZT8-11 18.919133954000003 12.706178645000001 25.132089263 ZT12-15 14.3824433915 12.476073483 16.2888133 ZT16-19 28.0261788225 25.280074385 30.772283260000002 ZT20-23 41.8957844925 38.192857085 45.5987119