condition mean min max ZT0-3 5.57455 5.57455 5.57455 ZT4-7 4.748405 4.748405 4.748405 ZT8-11 3.6719 3.6719 3.6719 ZT12-15 4.5212699999999995 4.5212699999999995 4.5212699999999995 ZT16-19 5.67298 5.67298 5.67298 ZT20-23 5.61565 5.61565 5.61565