epri-vtn_custom/app/views/data_export/export_csv.csv.erb

<% headers = report_interval_csv_columns.values %>
<%= CSV.generate_line headers, row_sep: ?\t, quote_char: ?\ %>
<% Time.use_zone(@time_zone) do %>
  <% @report_interval_descriptions.each do |report_interval_description| %>
    <% report_interval_description.report_intervals.in_datetime_range(@first_datetime, @last_datetime).order_by_rid.order_by_dtstart.each do |report_interval| %>
      <%= CSV.generate_line formatted_report_interval_row(report_interval_description, report_interval_description.report.report_name.name, report_interval, @time_zone),
          row_sep: ?\t, quote_char: ?\ %>
    <% end %>
  <% end %>
<% end %>