condition mean min max ZT0-3 289.4 289.4 289.4 ZT4-7 455.5 455.5 455.5 ZT8-11 395.5 395.5 395.5 ZT12-15 382.04999999999995 382.04999999999995 382.04999999999995 ZT16-19 297.95 297.95 297.95 ZT20-23 343.79999999999995 343.79999999999995 343.79999999999995