diff --git a/src/services/io_services.py b/src/services/io_services.py
index 5664b45..532cb07 100644
--- a/src/services/io_services.py
+++ b/src/services/io_services.py
@@ -2,10 +2,10 @@ import csv
 import datetime
 
 def load_raw_data(path):
-    data = dict()
+    data = list()
     with open(path) as csv_file:
         csv_reader = csv.reader(csv_file, delimiter=",")
         for r in csv_reader:
             if (r[1] != "Time Stamp"):
-                data[r[1]] = r[2]
+                data.append( (r[1], r[2]) )
     return data