"c           VAR 0164      03052 SEN GER 3R 920-929               MD= 1E-37   "
"c           REF 0164         LOC 1437 WIDTH  9             DK  23 COL 53-61  "
"c                                                 EXP DEC=  1                "
"c                                                                            "
"c              PASSENGER-MILES PER TRAIN-MILE, CLASS I RAILROADS             "
"c              -------------------------------------------------             "
"c                                                                            "
"c              NBER SERIES:  03052                                           "
"c              AREA COVERED:  U.S.                                           "
"c              UNITS:  PASSENGER-MILES                                       "
"c              ANNUAL COVERAGE:  NONE                                        "
"c              QUARTERLY COVERAGE:  NONE                                     "
"c              MONTHLY COVERAGE:  01/1920-12/1929                            "
"c              SEASONAL ADJUSTMENT:  NONE                                    "
"c              SOURCE:  NBER DERIVED THIS VARIABLE BY DIVIDING SERIES 03010  "
"c              (REVENUE PASSENGER-MILES) BY SERIES 03051 (PASSENGER          "
"c              TRAIN-MILES); DATA ARE FROM THE INTERSTATE COMMERCE           "
"c              COMMISSION.                                                   "
"c                                                                            "
"c              NOTES:  SERIES 03052 IS PRESENTED HERE AS TWO                 "
"c              VARIABLES--(1)--ORIGINAL DATA, 1920-1929  (2)--ORIGINAL DATA, "
"c              1929-1943                                                     "
"c                                                                            "
"c              CHECKED MANUALLY; CORRECTED 1/15/94.                          "
"c                                                                            "
"c           ...............................................................  "