id: 248 yr ( 7, (0, 4, 3, 0)) (( 7.4, 7.9 ), ( 11.2, 3.2 ))
 +0---+----+----+----+----+----++5 
                        |      
                        |      
                        |      
                        |   2014  
    +    +    +    +    +    + 
                        | 2017 13    
                        |      
                        |      
                        2016      
    +    +    +    +    +    + 
                        |      
                     2015  |      
                        |      
                        |      
    +    +    +    +    +    + 
                        |      
               2012        |      
                        |      
                        |      
    +    +    +    +    +    + 
                        |      
                        |      
                        |      
                        |      
    +    +    +    +    +    + 
                        |      
                        |      
                        |      
  2011                     |      
    +    +    +    +    +    + 
 -27                       |     -20