id: 211 yr ( 12, (8, 0, 4, 0)) (( 11.8, 12.3 ), ( 4.2, 0.7 ))
 +21                |               +19 
                 |                
  +    +    +    +    +    +   2021+ 
                 |                
                 |                
                 |                
                 |                
  +    +    +    +    + 20162019 18 +    + 
                 |     2015          
                 |    2020           
                 |                
                 |  2017             
  +    +    +    +2010   +    +    + 
                 |                
                 |               
                 |                
                 |                
--+----+----+----+----+----+----+-
                 |                
            2011    |                
                 |                
                 |                
  +    +    +    +    +    +    + 
                 |                
                 |                
                 |                
     2012           |                
  +    +    +    +    +    +    + 
   2014             |                
                 |                
  2013              |                
                 |                
 -17 +    +    +    +    +    +    +-21