condition mean min max ZT0-3 316.20000000000005 316.20000000000005 316.20000000000005 ZT4-7 292.2 292.2 292.2 ZT8-11 326.1 326.1 326.1 ZT12-15 293.04999999999995 293.04999999999995 293.04999999999995 ZT16-19 360.0 360.0 360.0 ZT20-23 429.45000000000005 429.45000000000005 429.45000000000005