condition mean min max ZT0-3 456.5 456.5 456.5 ZT4-7 420.6 420.6 420.6 ZT8-11 300.7 300.7 300.7 ZT12-15 247.1 247.1 247.1 ZT16-19 294.65 294.65 294.65 ZT20-23 354.79999999999995 354.79999999999995 354.79999999999995