condition mean min max ZT0-3 909.65 909.65 909.65 ZT4-7 1329.8 1329.8 1329.8 ZT8-11 1216.4 1216.4 1216.4 ZT12-15 1143.35 1143.35 1143.35 ZT16-19 958.15 958.15 958.15 ZT20-23 919.9 919.9 919.9