condition mean min max ZT0-3 416.55 416.55 416.55 ZT4-7 292.3 292.3 292.3 ZT8-11 334.65 334.65 334.65 ZT12-15 319.29999999999995 319.29999999999995 319.29999999999995 ZT16-19 375.45 375.45 375.45 ZT20-23 408.04999999999995 408.04999999999995 408.04999999999995