condition mean min max ZT0-3 0.01074615 0.01074615 0.01074615 ZT4-7 0.01495615 0.01495615 0.01495615 ZT8-11 0.02834635 0.02834635 0.02834635 ZT12-15 0.0 0.0 0.0 ZT16-19 0.156719 0.156719 0.156719 ZT20-23 0.0453756 0.0453756 0.0453756