condition mean min max ZT0-3 0.014098166666666667 0.01030505 0.0216661 ZT4-7 0.0104707 0.0104707 0.0104707 ZT8-11 0.0323723 0.0323723 0.0323723 ZT12-15 0.11014647500000001 0.10917945000000001 0.1111135 ZT16-19 0.08250545000000001 0.08250545000000001 0.08250545000000001 ZT20-23 0.09154075 0.09154075 0.09154075