condition mean min max ZT0-3 0.5946705 0.3861835 0.8031575 ZT4-7 0.6909894999999999 0.6909894999999999 0.6909894999999999 ZT8-11 0.540943 0.540943 0.540943 ZT12-15 0 0 0 ZT16-19 0.9485355 0.9485355 0.9485355 ZT20-23 0.8010675 0.8010675 0.8010675