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Table A-1: Time Series Characteristics of TSI Data Components
Excel | CSV
| Rail
passenger |
(011) (011) |
No |
5 |
M |
No TD; all H |
| Rail
freight |
|
|
|
|
|
| Carloads |
No valid model
yet |
No |
5 |
A |
TD, No H |
| Intermodals |
(011) (011) |
No |
3 |
A |
No TD; Easter & Thanksgiving |
| Trucking |
(011) (011) |
No |
3 |
A |
TD; Easter |
| Waterborne |
(011) (011) |
No |
12 |
A |
TD; No H |
| Transit |
(011) (011) |
No |
4 |
A |
TD; No H |
| Aviation |
|
|
|
|
|
| Freight |
(011) (011) |
No |
3 |
M |
TD and Easter
& Thanksgiving |
| Passenger |
(011) (011) |
Yes, at 1% level |
4 |
M |
No TD, All 3 H |
| Pipeline |
|
|
|
|
|
| Natural gas |
(012) (011) |
No |
7 |
M |
TD; No H |
| Petroleum |
(011) (011) |
No |
5 |
M |
TD, No H |
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, http://www.bts.gov.
1 MCD=Months to cyclical
dominance. 3 months is normal for the
trend to equal and surpass the irregularity; higher than 3 shows irregularity
too high.
2 M=Multiplicative Model A=Additive Model
3 TD=Trading Days, H=(Moving)
Holidays: Easter, Labor Day, and Thanksgiving. Beginning January 27, 2005, Thanksgiving
uses -3 for value, Easter is set at 2 for Trucking; otherwise, equals 7;
Labor Day is always set at 4.
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