+extern double Data_Calibrate(double value, double x[], double y[], int size);
+
+extern void Data_Handler(DataFile * df, FCGIValue * start, FCGIValue * end, DataFormat format, double current_time); // Helper; given FCGI params print data
+extern DataFormat Data_GetFormat(FCGIValue * fmt); // Helper; convert human readable format string to DataFormat
+
+
+extern double Data_Callibrate(double value, double map[], int map_size);