diff --git a/cronjob/chart/image_file/image_data.h b/cronjob/chart/image_file/image_data.h
new file mode 100644
index 0000000..8a0aa13
--- /dev/null
+++ b/cronjob/chart/image_file/image_data.h
@@ -0,0 +1,17 @@
+
+
+
+typedef struct pix_list *pix_list_ptr;
+typedef struct pix_list {
+  pix_list_ptr 	next;
+  int 		x_pix_coord;
+  int 		value_count;
+  int 		value_sum;
+} pix_list_t;
+
+
+
+/* Holt die Liste mit den Daten fuer das Bild.
+ * 1. Argument: die effektive Breite des Bereiches in dem gezeichnet werden soll
+ */
+pix_list_ptr get_pix_list(int );