condition mean min max ZT0-3 144.83599999999998 144.83599999999998 144.83599999999998 ZT4-7 120.64099999999999 120.64099999999999 120.64099999999999 ZT8-11 115.05449999999999 115.05449999999999 115.05449999999999 ZT12-15 96.2281 96.2281 96.2281 ZT16-19 161.86233333333334 161.86233333333334 161.86233333333334 ZT20-23 209.64600000000002 209.64600000000002 209.64600000000002