condition mean min max ZT0-3 765.85 765.85 765.85 ZT4-7 1104.1 1104.1 1104.1 ZT8-11 1008.0999999999999 1008.0999999999999 1008.0999999999999 ZT12-15 952.3499999999999 952.3499999999999 952.3499999999999 ZT16-19 856.85 856.85 856.85 ZT20-23 758.8 758.8 758.8