condition mean min max ZT0-3 381.7 381.7 381.7 ZT4-7 359.5 359.5 359.5 ZT8-11 379.6 379.6 379.6 ZT12-15 388.04999999999995 388.04999999999995 388.04999999999995 ZT16-19 425.8 425.8 425.8 ZT20-23 438.29999999999995 438.29999999999995 438.29999999999995