"c           VAR 0111      03046 NET AIL 3R 920-943               MD= 1E-37   "
"c           REF 0111         LOC  960 WIDTH  9             DK  16 COL 17-25  "
"c                                                                            "
"c                                                                            "
"c              NET TON-MILES PER TRAIN-MILE, CLASS I RAILROADS               "
"c              -----------------------------------------------               "
"c                                                                            "
"c              NBER SERIES:  03046                                           "
"c              AREA COVERED:  U.S.                                           "
"c              UNITS:  TON-MILES                                             "
"c              ANNUAL COVERAGE:  NONE                                        "
"c              QUARTERLY COVERAGE:  NONE                                     "
"c              MONTHLY COVERAGE:  01/1920-08/1943                            "
"c              SEASONAL ADJUSTMENT:  NONE                                    "
"c              SOURCE:  INTERSTATE COMMERCE COMMISION, DATA FOR 1920-1934:   "
"c             "FREIGHT AND PASSENGER SERVICE OPERATING STATISTICS OF CLASS   "
"c              I STEAM RAILWAYS IN THE UNITED STATES".  DATA FOR 1935-1943:  "
"c             "FREIGHT TRAIN PERFORMANCE OF CLASS I STEAM RAILWAYS IN THE    "
"c              UNITED STATES".                                               "
"c                                                                            "
"c              NOTES:  DATA WERE OBTAINED BY NBER BY DIVIDING SERIES 03001   "
"c              (RAILROAD REVENUE AND NON-REVENUE FREIGHT TON-MILES) BY       "
"c              SERIES 03045 (FREIGHT TRAIN-MILES).  NON-REVENUE TON-MILES    "
"c              ARE INCLUDED IN THE DATA FOR SERIES 03045.                    "
"c                   DATA EXCLUDE SWITCHING AND TERMINAL COMPANIES            "
"c              THROUGHOUT.                                                   "
"c                                                                            "
"c              CHECKED MANUALLY; CORRECTED 1/15/94.                          "
"c                                                                            "
"c           ...............................................................  "