condition mean min max ZT0-3 9.69348 9.69348 9.69348 ZT4-7 13.54557 13.54557 13.54557 ZT8-11 11.450229499999999 11.450229499999999 11.450229499999999 ZT12-15 10.589209 10.589209 10.589209 ZT16-19 8.9119225 8.9119225 8.9119225 ZT20-23 10.3013875 10.3013875 10.3013875