condition mean min max ZT0-3 391.3 391.3 391.3 ZT4-7 413.2 413.2 413.2 ZT8-11 392.5 392.5 392.5 ZT12-15 391.0 391.0 391.0 ZT16-19 387.5 387.5 387.5 ZT20-23 359.65 359.65 359.65