condition mean min max ZT0-3 335.85 335.85 335.85 ZT4-7 312.4 312.4 312.4 ZT8-11 233.7 233.7 233.7 ZT12-15 277.65 277.65 277.65 ZT16-19 328.6 328.6 328.6 ZT20-23 233.89999999999998 233.89999999999998 233.89999999999998