diff --git a/icartt/dataset.py b/icartt/dataset.py
index 3a67a382424c499cc09390bf963323ae11a37ffe..bdd9e9c87fce08c7c8fa947e3fcb930e46f2cf54 100644
--- a/icartt/dataset.py
+++ b/icartt/dataset.py
@@ -102,10 +102,16 @@ class Dataset:
         self.DVAR         = [
                             Variable('Time_Stop',
                                      'seconds_from_0_hours_on_valid_date',
+                                     1.0, -9999999),
+                            Variable('Some_Variable',
+                                     'ppbv',
                                      1.0, -9999999)
                             ]
         self.SCOM         = []
         self.NCOM         = []
+
+        self.data         = [ [1.0, 2.0, 45.0], [2.0, 3.0, 36.0] ]
+
         # for 2210
         self.IBVAR        = None
         self.AUXVAR       = []