condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 1.36561 1.36561 1.36561 ZT8-11 1.382735 1.382735 1.382735 ZT12-15 0.7521925 0.0 1.504385 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0