condition mean min max ZT0-3 62.430375000000005 48.95805 75.90270000000001 ZT4-7 162.911 162.911 162.911 ZT8-11 37.303399999999996 37.303399999999996 37.303399999999996 ZT12-15 0 0 0 ZT16-19 39.66 39.66 39.66 ZT20-23 38.15805 38.15805 38.15805