condition mean min max ZT0-3 45.189917 45.189917 45.189917 ZT4-7 43.3238745 43.3238745 43.3238745 ZT8-11 46.782551 46.782551 46.782551 ZT12-15 47.0119315 47.0119315 47.0119315 ZT16-19 43.7047715 43.7047715 43.7047715 ZT20-23 39.770468 39.770468 39.770468