condition mean min max ZT0-3 9.04228 8.01143 10.073129999999999 ZT4-7 2.06831 2.06831 2.06831 ZT8-11 0.6276839999999999 0.6276839999999999 0.6276839999999999 ZT12-15 0 0 0 ZT16-19 11.382684999999999 11.382684999999999 11.382684999999999 ZT20-23 11.330785 11.330785 11.330785