fix tests
fix tests

Since the original code was written, we figured out that the first
three columns following the date/time in the CSV file are ignored.
The tests failed because they did not assume this and the current code
does. Test data modified so now correct.

OpenEnergyDashboard/OED,OpenEnergyDashboard/OED,OpenEnergyDashboard/OED,OpenEnergyDashboard/OED