condition mean min max ZT0-3 1.5948025000000001 1.50845 1.681155 ZT4-7 1.0690650000000002 1.0690650000000002 1.0690650000000002 ZT8-11 1.74757 1.74757 1.74757 ZT12-15 0 0 0 ZT16-19 3.3436950000000003 3.3436950000000003 3.3436950000000003 ZT20-23 1.755865 1.755865 1.755865