19.3  18.0  21.6  22.4  20.9  20.1  24.0
23.1  26.5  25.2  25.0  24.3  21.4  26.7
23.7  20.8  19.8  24.1  22.2  22.6  22.9
17.2  16.6  16.9  17.7  21.3  15.2  19.0