condition mean min max ZT0-3 3.3450575000000002 2.6672700000000003 4.022845 ZT4-7 4.086069999999999 4.086069999999999 4.086069999999999 ZT8-11 1.65735 1.65735 1.65735 ZT12-15 0 0 0 ZT16-19 2.140645 2.140645 2.140645 ZT20-23 4.089119999999999 4.089119999999999 4.089119999999999