Delete all survey readings from 1/14/2015 survey that don't have fmr/h reading unit
Bruce tells me that survey readings should be done in "freeze" mode. When readings are properly done in freeze mode the unit is displayed as fmr/h. Improper readings have units of mr/h. The last survey done on 1/14/2015 has three readings with mr/h. I need to delete these entries.
I should be able to edit the original CSV file and re-import the file. Matching timestamps override old data.