condition mean min max ZT0-3 520.8 520.8 520.8 ZT4-7 458.0 458.0 458.0 ZT8-11 351.05 351.05 351.05 ZT12-15 413.1 413.1 413.1 ZT16-19 384.45 384.45 384.45 ZT20-23 450.15 450.15 450.15