condition mean min max ZT0-3 828.2 828.2 828.2 ZT4-7 901.2 901.2 901.2 ZT8-11 920.25 920.25 920.25 ZT12-15 1016.15 1016.15 1016.15 ZT16-19 856.85 856.85 856.85 ZT20-23 875.95 875.95 875.95