"c           VAR 0101      03055 SER VIC 3R 920-943               MD= 1E-37   "
"c           REF 0101         LOC  870 WIDTH  9             DK  14 COL 53-61  "
"c                                                                            "
"c                                                                            "
"c              REVENUE TON-MILES PER SERVICEABLE FREIGHT LOCOMOTIVE, CLASS   "
"c              I RAILROADS                                                   "
"c              -----------------------------------------------------------   "
"c                                                                            "
"c              NBER SERIES:  03055                                           "
"c              AREA COVERED:  U.S.                                           "
"c              UNITS:  THOUSANDS OF REVENUE TON-MILES                        "
"c              ANNUAL COVERAGE:  NONE                                        "
"c              QUARTERLY COVERAGE:  NONE                                     "
"c              MONTHLY COVERAGE:  01/1920-03/1943; 06-08/1943                "
"c              SEASONAL ADJUSTMENT:  NONE                                    "
"c              SOURCE:  DATA COMPUTED BY NBER FROM SERIES 03003 (REVENUE     "
"c              TON-MILES) AND SERIES 01251 (SERVICEABLE FREIGHT              "
"c              LOCOMOTIVES); BOTH SERIES ARE BASED ON INTERSTATE COMMERCE    "
"c              COMMISSION SOURCES.                                           "
"c                                                                            "
"c              NOTES:  SERIES 03003 EXCLUDES SWITCHING AND TERMINAL          "
"c              COMPANIES THROUGHOUT; SERIES 01251 INCLUDES SWITCHING AND     "
"c              TERMINAL COMPANIES FROM FEBRUARY 1937 ON.                     "
"c                   DATA FOR 1921-JANUARY 1935 ARE BASED ON DAILY AVERAGES.  "
"c              DATA FOR FEBRUARY 1935-AUGUST 1943 ARE BASED ON FIRST OF THE  "
"c              MONTH (THE PUBLISHED END-OF-MONTH FIGURES BEING PLACED        "
"c              FORWARD ONE MONTH) CENTERED BY A TWO MONTH MOVING AVERAGE.    "
"c                   FOR 1920, NO SERVICEABLE FREIGHT LOCOMOTIVE DATA WERE    "
"c              AVAILABLE FOR THE NEW YORK CENTRAL RAILROAD.                  "
"c                                                                            "
"c              CHECKED MANUALLY; NO CORRECTIONS NECESSARY.                   "
"c                                                                            "
"c           ...............................................................  "