condition mean min max ZT0-3 109.40083333333332 75.589 140.5845 ZT4-7 52.80215 52.80215 52.80215 ZT8-11 56.28595 56.28595 56.28595 ZT12-15 134.84574999999998 114.7795 154.91199999999998 ZT16-19 135.971 135.971 135.971 ZT20-23 171.0265 171.0265 171.0265