id: 7 yr ( 8, (8, 0, 0, 0)) (( 2.3, 2.4 ), ( 11.5, 5.2 ))
 +16    +    +    +   +10 
|                   
|                2015  
|                   
|              2016    
+    +    +    +    
|                   
|                   
|        2013 11 2012        
|                  
+    +   2017+    +    
|                   
|                   
|                   
|                   
+ 2014  +2018   +    +    
|                   
|                   
|                   
|                   
+    +    +    +    
|                   
|                   
|                   
|                   
+    +    +    +    
|                   
|                   
|                   
|                   
 0----+----+----+---