Adiciona arquivos da tabela 9.13 do Zimmermann

data-raw/ZimmermannTb9.13.txt

+rept	micro	densi	prod
+1	0	0	2.9638
+2	0	0	3.3324
+3	0	0	3.3927
+1	1	0	3.5515
+2	1	0	3.8698
+3	1	0	3.4713
+1	2	0	3.4014
+2	2	0	2.9494
+3	2	0	2.9638
+1	0	1	3.6425
+2	0	1	3.281
+3	0	1	3.7324
+1	1	1	3.4886
+2	1	1	3.4472
+3	1	1	3.5575
+1	2	1	3.2553
+2	2	1	3.7753
+3	2	1	3.8768
+1	0	2	3.6599
+2	0	2	3.8075
+3	0	2	3.9112
+1	1	2	3.7016
+2	1	2	3.5611
+3	1	2	3.1523
+1	2	2	3.6484
+2	2	2	3.5775
+3	2	2	3.659