condition mean min max ZT0-3 4935.0 4935.0 4935.0 ZT4-7 5488.5 5488.5 5488.5 ZT8-11 5265.05 5265.05 5265.05 ZT12-15 5037.75 5037.75 5037.75 ZT16-19 4458.25 4458.25 4458.25 ZT20-23 4132.15 4132.15 4132.15