condition mean min max ZT0-3 589.57975 555.383 623.7764999999999 ZT4-7 1585.575 1585.575 1585.575 ZT8-11 1666.73 1666.73 1666.73 ZT12-15 0 0 0 ZT16-19 1034.1979999999999 1034.1979999999999 1034.1979999999999 ZT20-23 1010.641 1010.641 1010.641