condition mean min max ZT0-3 12.55895 12.53455 12.58335 ZT4-7 11.17405 11.17405 11.17405 ZT8-11 10.705555 10.705555 10.705555 ZT12-15 0 0 0 ZT16-19 11.77125 11.77125 11.77125 ZT20-23 17.74255 17.74255 17.74255