condition mean min max ZT0-3 67.232083 67.232083 67.232083 ZT4-7 76.70829 76.70829 76.70829 ZT8-11 93.07933700000001 93.07933700000001 93.07933700000001 ZT12-15 73.0758525 73.0758525 73.0758525 ZT16-19 95.3859505 95.3859505 95.3859505 ZT20-23 81.7774395 81.7774395 81.7774395