condition mean min max ZT0-3 0.446863 0.414589 0.47913700000000004 ZT4-7 0.5539665 0.5539665 0.5539665 ZT8-11 0.689342 0.689342 0.689342 ZT12-15 0 0 0 ZT16-19 0.8161285 0.8161285 0.8161285 ZT20-23 0.649465 0.649465 0.649465