condition mean min max ZT0-3 502.341419 502.341419 502.341419 ZT4-7 529.0279805 529.0279805 529.0279805 ZT8-11 588.922816 588.922816 588.922816 ZT12-15 658.330917 658.330917 658.330917 ZT16-19 520.203957 520.203957 520.203957 ZT20-23 561.9991255 561.9991255 561.9991255