condition mean min max ZT0-3 0.7737155 0.7278880000000001 0.8195429999999999 ZT4-7 1.48554 1.48554 1.48554 ZT8-11 0.9589669999999999 0.9589669999999999 0.9589669999999999 ZT12-15 0 0 0 ZT16-19 1.0721855 1.0721855 1.0721855 ZT20-23 0.9907055 0.9907055 0.9907055