condition mean min max ZT0-3 100.82959 100.82959 100.82959 ZT4-7 60.0776315 60.0776315 60.0776315 ZT8-11 18.3389485 18.3389485 18.3389485 ZT12-15 24.662174999999998 24.662174999999998 24.662174999999998 ZT16-19 13.878630999999999 13.878630999999999 13.878630999999999 ZT20-23 15.2420025 15.2420025 15.2420025