diff --git a/sources/01b-visualization.ipynb b/sources/01b-visualization.ipynb
index c8c44b8..419164a 100644
--- a/sources/01b-visualization.ipynb
+++ b/sources/01b-visualization.ipynb
@@ -98,8 +98,8 @@
     "- The first timestamp, `20200602T100559`, is the date at which the data was captured.\n",
     "- `N0214` is the processing baseline. This is like a version string that encodes how the previous processing steps were performed.\n",
     "- `R022` is the relative orbit number.\n",
-    "- `T3UUU` is the UTM tile for which the product contains information.\n",
-    "- The second timestamp, `20200602T135324`, \"is the '\\<Product Discriminator\\>' field, which is 15 characters in length, and is used to distinguish between different end user products from the same datatake.\" ([Source](https://sentinel.esa.int/web/sentinel/user-guides/sentinel-2-msi/naming-convention))"
+    "- `T33UUU` is the unique name of the area which is covered by the product.\n",
+    "- The second timestamp, `20200602T135324`, \"is the '\\<Product Discriminator\\>' field, which is [...] used to distinguish between different end user products from the same datatake.\" ([Source](https://sentinel.esa.int/web/sentinel/user-guides/sentinel-2-msi/naming-convention))"
    ]
   },
   {