condition mean min max ZT0-3 1.5386842500000002 0.9195035 2.157865 ZT4-7 0.38724650000000005 0.38724650000000005 0.38724650000000005 ZT8-11 0.1523745 0.1523745 0.1523745 ZT12-15 0 0 0 ZT16-19 0.1518605 0.1518605 0.1518605 ZT20-23 0.2288075 0.2288075 0.2288075