condition mean min max ZT0-3 34.575947132500005 33.578535280000004 35.573358985 ZT4-7 36.156398554999996 34.036778319999996 38.27601879 ZT8-11 39.21531920333334 38.156269200000004 40.27436920666667 ZT12-15 45.57834990333333 43.04188629 48.114813516666665 ZT16-19 56.178821195 54.95830515 57.39933724 ZT20-23 52.33734215 47.85104257333333 56.823641726666665