condition mean min max ZT0-3 82.040367 82.040367 82.040367 ZT4-7 111.360423 111.360423 111.360423 ZT8-11 70.53654499999999 70.53654499999999 70.53654499999999 ZT12-15 59.660167 59.660167 59.660167 ZT16-19 44.7022815 44.7022815 44.7022815 ZT20-23 51.9196395 51.9196395 51.9196395