condition mean min max ZT0-3 43.787873 43.787873 43.787873 ZT4-7 97.191182 97.191182 97.191182 ZT8-11 90.006276 90.006276 90.006276 ZT12-15 79.89305949999999 79.89305949999999 79.89305949999999 ZT16-19 57.60655800000001 57.60655800000001 57.60655800000001 ZT20-23 56.1599195 56.1599195 56.1599195