condition mean min max ZT0-3 0.24725025 0.1112325 0.383268 ZT4-7 0.9506665000000001 0.9506665000000001 0.9506665000000001 ZT8-11 0.8931 0.8931 0.8931 ZT12-15 0 0 0 ZT16-19 0.167822 0.167822 0.167822 ZT20-23 0.274309 0.274309 0.274309