condition mean min max ZT0-3 24.2206 23.217 25.31425 ZT4-7 25.67625 25.67625 25.67625 ZT8-11 24.22715 24.22715 24.22715 ZT12-15 41.60405 40.57535 42.63275 ZT16-19 25.8261 25.8261 25.8261 ZT20-23 27.0351 27.0351 27.0351