condition mean min max ZT0-3 38.21069719583333 37.33934484666666 39.082049545000004 ZT4-7 36.60240202 36.45235528 36.75244876 ZT8-11 33.416471038333334 31.67374475 35.15919732666667 ZT12-15 42.298017009999995 40.77986359 43.81617043 ZT16-19 44.828895726666666 44.058278163333334 45.59951329 ZT20-23 47.31703196833334 45.76501803666667 48.8690459