condition mean min max ZT0-3 559.05 559.05 559.05 ZT4-7 358.3 358.3 358.3 ZT8-11 368.95 368.95 368.95 ZT12-15 377.54999999999995 377.54999999999995 377.54999999999995 ZT16-19 508.65 508.65 508.65 ZT20-23 580.85 580.85 580.85