Simplified Decision Tree:

Abs_count > 36 : no (7.0/1.3)
Abs_count <= 36 :
|   #Records <= 5 : no (7.0/1.3)
|   #Records > 5 :
|   |   #Records <= 14 :
|   |   |   N_area <= 1.08537e+06 : yes (2.0/1.0)
|   |   |   N_area > 1.08537e+06 : no (10.0/2.4)
|   |   #Records > 14 :
|   |   |   Annual = yes:
|   |   |   |   Abs_range <= 33.49 :
|   |   |   |   |   Abs_range > 26.22 : yes (4.0/1.2)
|   |   |   |   |   Abs_range <= 26.22 :
|   |   |   |   |   |   N_genera > 10 : no (2.0/1.0)
|   |   |   |   |   |   N_genera <= 10 :
|   |   |   |   |   |   |   Abs_range <= 26.19 : yes (8.0/2.4)
|   |   |   |   |   |   |   Abs_range > 26.19 : no (3.0/2.1)
|   |   |   |   Abs_range > 33.49 :
|   |   |   |   |   #Records > 39 : no (16.0/2.5)
|   |   |   |   |   #Records <= 39 :
|   |   |   |   |   |   #Counties <= 12 : no (3.0/1.1)
|   |   |   |   |   |   #Counties > 12 : yes (2.0/1.0)
|   |   |   Annual = no:
|   |   |   |   Abs_range <= 21.49 : yes (6.0/1.2)
|   |   |   |   Abs_range > 21.49 :
|   |   |   |   |   #Records <= 21 : no (5.0/2.3)
|   |   |   |   |   #Records > 21 :
|   |   |   |   |   |   N_range <= 17.67 : no (4.0/2.2)
|   |   |   |   |   |   N_range > 17.67 :
|   |   |   |   |   |   |   N_area <= 3.60726e+06 : yes (42.0/9.4)
|   |   |   |   |   |   |   N_area > 3.60726e+06 : no (3.0/2.1)


Tree saved


Evaluation on training data (124 items):

	 Before Pruning           After Pruning
	----------------   ---------------------------
	Size      Errors   Size      Errors   Estimate

	  45    8( 6.5%)     31   14(11.3%)    (27.7%)   <<