condition mean min max ZT0-3 0.9959594999999999 0.9959594999999999 0.9959594999999999 ZT4-7 0.7038150000000001 0.7038150000000001 0.7038150000000001 ZT8-11 0.16780050000000002 0.16780050000000002 0.16780050000000002 ZT12-15 0.32057349999999996 0.32057349999999996 0.32057349999999996 ZT16-19 0.533398 0.533398 0.533398 ZT20-23 1.144955 1.144955 1.144955