condition mean min max ZT0-3 0.036826000000000005 0.036826000000000005 0.036826000000000005 ZT4-7 0.089048 0.089048 0.089048 ZT8-11 0.1127665 0.1127665 0.1127665 ZT12-15 0.03206425 0.03206425 0.03206425 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0