condition mean min max ZT0-3 384.65 384.65 384.65 ZT4-7 367.8 367.8 367.8 ZT8-11 326.5 326.5 326.5 ZT12-15 325.55 325.55 325.55 ZT16-19 413.5 413.5 413.5 ZT20-23 305.9 305.9 305.9