condition mean min max ZT0-3 1136.25 1136.25 1136.25 ZT4-7 689.5 689.5 689.5 ZT8-11 705.55 705.55 705.55 ZT12-15 856.6 856.6 856.6 ZT16-19 1155.85 1155.85 1155.85 ZT20-23 1144.25 1144.25 1144.25