id: 236 yr ( 10, (1, 6, 3, 0)) (( 12.6, 14.3 ), ( 12.8, 0.2 ))
 +1                      |          +15 
                       |           
                       |        2011  
---+----+----+----+----+----+----+-
                       |           
                       |           
                       |     2018     
                       |   2013 122014 192020     
   +    +    +    +    +    +    + 
                       |           
                       |           
                                  
                       |           
   +    +    +    +    +    +    + 
                       |           
                       |           
                       |           
                2015      |           
   +    +    +    +    +    +    + 
                       |           
                       |           
            2016          |           
                       |           
   +    +    +    +    +    +    + 
                       |           
                       |           
                       |           
                       |           
   +    +    +    +    +    +    + 
  2017                    |           
                       |           
 -42                      |          -33