condition mean min max ZT0-3 262.95 262.95 262.95 ZT4-7 155.8 155.8 155.8 ZT8-11 168.95 168.95 168.95 ZT12-15 308.6 308.6 308.6 ZT16-19 413.15 413.15 413.15 ZT20-23 376.25 376.25 376.25