Update README.md

README.md

@@ -18,6 +18,16 @@ The container makes available a MariaDB instance with the full database on the r
 ---
 ## Specifications
 
+```
+Table           |Size (MB)|Rows (#)|
+----------------+---------+--------+
+eu_lines        |   777.56| 1167075|
+eu_stations     |     0.02|       0|
+geometry_columns|     0.02|       4|
+na_lines        |   230.80|  446942|
+na_stations     |     0.02|       0|
+spatial_ref_sys |     0.02|       0|
+```
 ---
 ## Notes