id: 95 yr ( 10, (9, 0, 1, 0)) (( 6.0, 5.6 ), ( 13.1, 6.5 ))
 +17              |               +11 
+    +    +    +    +    +    + 
               |             2015  
               |                
               |            20122018 17  
               |         20142016 13 2019   
+    +    +    +    +    +    + 
               |                
               |               
               |                
               |                
+    +    +    +    +    +    + 
               |   2020            
               |                
               |                
               |                
+    +    +    +    +    +    + 
               |                
               |                
               |                
               |                
+    +    +    +    +    +    + 
               |                
               |                
               |                
               |                
+----+----+----+----+----+----+-
               |                
               |                
               |                
               |                
+    +    +    +    +    +    + 
  2021            |                
               |                
 -4              |               -10