2      4      6      8      10     12     14    
 4.2    4.4    4.6    4.8    5      5.2    5.4   
 7.4    7.2    7      6.8    6.6    6.4    6.2   
 8.4    8.8    9.2    9.6    8.6    9      9.4   
 10     10.4   10.8   11.2   11.6   11.8   11.4