Reporting Schedules. The reports listed in the schedule below are to be filed in accordance with the indicated regulation and at the indicated time: *Planning data, which is submitted on a yearly basis in April, August, and December, will be provided with the quarterly reports due in May, November, and February, respectively. —————— Reporting Format. Reports shall be on a corporate basis only and a product of normal company measurement techniques. Each item to be reported will be listed on a separate line under the appropriate heading as shown above. Further categorization under these headings may be desirable for simplification reasons. Basically all data shall be shown as follows: Planning Data. All data will be on a corporate area basis only. Basic and Support Service Results Data. When a failure to meet minimum standards is reported, a supplemental narrative statement shall be prepared briefly describing the cause and expected duration of the service problem and service improvement plans in effect. Each narrative statement will be numbered for reference to the basic report.