condition mean min max ZT0-3 44.660724092500004 40.376462325 48.94498586 ZT4-7 46.34155 38.3911881 54.2919119 ZT8-11 72.4376633725 59.53438682 85.340939925 ZT12-15 50.3766736275 38.783873905 61.96947335 ZT16-19 39.577488380000005 39.010026475000004 40.144950285 ZT20-23 44.95380153 41.17832446 48.7292786