id: 291 yr ( 8, (3, 0, 4, 1)) (( 10.3, 10.3 ), ( 1.0, 4.0 ))
 +15 +    +    +    +    +    +    ++11 
                      |           
                      |        2011  
                      |           
                      |     2016     
  +    +    +    +    +    +    + 
                      |           
                      |   2015       
                      |           
                      |           
  +    +    +    +    +    +    + 
                      |           
                    2017 |           
                      |           
                     |           
--+----+----+----2014----+----+----+-
                      |           
                      |           
                      |           
              2018       |           
  +    +    +    +    +    +    + 
                      |           
                      |           
         2013            |           
                      |           
  +    +    +    +    +    +    + 
                      |           
                      |           
                      |           
                      |           
  +    +    +    +    +    +    + 
  2012                   |           
                      |           
 -18                     |          -23