"c           VAR 0253      03071 AIRLINE 3R 931-941               MD= 1E-37   "
"c           REF 0253         LOC 2238 WIDTH  9             DK  36 COL 35-43  "
"c                                                 EXP DEC=  2                "
"c                                                                            "
"c              REVENUE AND NON-REVENUE PASSENGER-MILES, DOMESTIC AIRLINES    "
"c              ----------------------------------------------------------    "
"c                                                                            "
"c              NBER SERIES:  03071                                           "
"c              AREA COVERED:  U.S.                                           "
"c              UNITS:  MILLIONS OF PASSENGER-MILES                           "
"c              ANNUAL COVERAGE: NONE                                        "
"c              QUARTERLY COVERAGE:  NONE                                     "
"c              MONTHLY COVERAGE:  07/1931-12/1941                            "
"c              SEASONAL ADJUSTMENT:  NONE                                    "
"c              SOURCE:  DATA FOR 1931-1939:  U.S. DEPARTMENT OF COMMERCE,    "
"c              AIR COMMERCE BULLETIN.  DATA FOR 1940-1941:  CIVIL            "
"c              AERONAUTICS ADMINISTRATION, CIVIL AERONAUTICS JOURNAL.        "
"c                                                                            "
"c              NOTES: DATA ARE FOR REVENUE AND NON-REVENUE MILES FLOWN.      "
"c                                                                            "
"c              CHECKED MANUALLY; NO CORRECTIONS NECESSARY.                   "
"c                                                                            "
"c                                                                            "