condition mean min max ZT0-3 9.34667 9.34667 9.34667 ZT4-7 5.487814999999999 5.487814999999999 5.487814999999999 ZT8-11 9.01044 9.01044 9.01044 ZT12-15 9.69154 9.69154 9.69154 ZT16-19 11.47435 11.47435 11.47435 ZT20-23 9.926165000000001 9.926165000000001 9.926165000000001