condition mean min max ZT0-3 46.57734 46.57734 46.57734 ZT4-7 37.2822115 37.2822115 37.2822115 ZT8-11 37.502646 37.502646 37.502646 ZT12-15 57.406486 57.406486 57.406486 ZT16-19 61.47718 61.47718 61.47718 ZT20-23 66.3960415 66.3960415 66.3960415