condition mean min max ZT0-3 1.23834875 0.8964624999999999 1.580235 ZT4-7 1.184615 1.184615 1.184615 ZT8-11 0.6339440000000001 0.6339440000000001 0.6339440000000001 ZT12-15 0 0 0 ZT16-19 0.583267 0.583267 0.583267 ZT20-23 1.8741349999999999 1.8741349999999999 1.8741349999999999