Question
Each Data Buffet time series has a textual description that includes, at its end and in parentheses, the measurement units (currency, rates, adjustment, etc.). What do the abbreviations mean?
Answer
Where do I see the description?
The series description appears in View mode, Basket output, and Mnemonic 411. When configuring a basket (i.e., its optional header fields), we strongly recommend activating the description because it contains essential information about the series.
Examples
The time series IRFEDD.US has a description that reads "Interest Rates: Federal Funds Effective Rate, (% P.A., NSA)." There's a textdescriptor with category prefix at the front, followed by the parenthesized unitdescriptor. You can read this description as:
The federal funds effective rate is an interest rate; the series values are expressed in percent per annum, not seasonally adjusted.
We indicate currency values using unambiguous ISO 4217 codes, rather than local or journalistic symbols. Currency levels are in nominal terms unless otherwise indicated; if in inflationadjusted terms, that's denoted by the unitdescriptor, not by the word "real." (N.B.: Although "real" and "inflation adjusted" are synonymous, there's a methodological difference between "constant" and "chained" values.)
 (Mil. USD) = millions of U.S. dollars = current, nominal
 (Bil. Ch. 2000 EUR, NSA) = billions of chained year2000 euros = chained, real, inflationadjusted
The following are equivalent:
 Bil. 2005 USD
 Bil. 2005 $
 Bil. 05$
 "Billions of inflationadjusted U.S. dollars in year2005 terms"
Anatomy
The unitsdescriptor may have one or two segments, separated by commas. Annual series usually have just one segment. Subannual series have at least two, where the second describes the adjustment (if any) that has been applied to the values in the series.
The first segment describes the base measurement unit, which can help you understand (if the textdescription doesn't otherwise specify) if the values are levels, rates, indexes, etc. As necessary, there may be a multiplier or scaler that multiplies the base unit, a comparison interval symbol (monthovermonth, etc.), an aggregation symbol (moving average, yeartodate), and a measurement point (end of period, etc.).
Listing
Please note that a degree of inconsistency exists among our unitdescriptors , and you will see alternative symbols denoting the same measurement unit. In this listing, deprecated symbols are marked in the third column; we are gradually replacing these with standardized symbology.
First segment of unitsdescriptor 

Second segment of unitsdescriptor 
Abbv. 
Description 
Dep. 

Abbv. 
Description 
Dep. 

Multipliers 



Single adjustments 

Hnd. 
Hundred (10^2) 


NSA 
Not seasonally adjusted, unadjusted, original 

Ths. 
Thousand (10^3) 


SA 
Seasonally adjusted, deseasonalized 

10 Ths. 
Ten thousand (10^4) 


AR 
Annualized rate 

Mil. 
Million (10^6) 


CDA 
Calendar day adjusted 

Bil. 
Billion (10^9) 


WDA 
Working day adjusted 

Tril. 
Trillion (10^12) 



Compound adjustments 





NSAAR 
Not seasonally adjusted at annualized rate 


Default units 


SAAR 
Seasonally adjusted at annualized rate 

# 
Number, single items, persons, etc. 


CDASA 
Calendar adjusted and seasonally adjusted 

(blank) 
or 
x 

CDA & SA 
or 
x 




WDASA 
Workingday adjusted and seasonally adjusted 


Physical dimensions 


WDA & SA 
or 
x 
Bbl 
Barrels 





L 
Liters 


Modifier segments 
m² 
Square meters 


Abbv 
Description 

m^2 
or 
x 


Time basis 

Sqm 
or 
x 

P.A. 
Per annum 

ft² 
Square feet 


YTD 
Yeartodate 

Sq ft 
or 
x 

YTD(Apr) 
Yeartodate, year begins in April 





3mo MA 
3month moving average 


Time units 



Measurement point or interval 

Hr 
Hour 


12mo Ending 
12month rolling period 

Wk 
Week 



E.g. FBKPY.US 

Mo 
Month 


EOP END 
End of period

x 
Yr 
Year 


AVE 
Average over period 





SUM 
Sum over period 


Currency units (ISO 4217) 



Comparison interval 

USD 
U.S. dollar 


W/W 
Weekoverweek 

EUR 
Euro 


M/M 
Monthovermonth 

JPY 
Japanese yen 


Q/Q 
Quarteroverquarter 

GBP 
British pound sterling 


Y/Y 
Yearoveryear 

CAD 
Canadian dollar 





CNY 
Chinese yuan renminbi 





… 
Etc. 






Currency units (symbols) 





$ 
U.S. dollar 
x 




C$ 
Canadian dollar 
x 





Nominal vs. real (inflationadjusted) 





XYZ 
Nominal XYZ (current) 





2005 XYZ 
XYZ with 2005 fixed reference year 





Ch. XYZ 
Chained XYZ with unspecified reference year 





Ch. 2005 XYZ 
Chained XYZ with 2005 reference year 





05$ 
2005 U.S. dollars 
x 












Percentage units and rates 





% 
Percent of whole 





% P.A. 
Percent per annum (interest rate) 





% 
or 
x 




Per 1000 population 
E.g. VS%LBTHUA.IMEX 





% W/W 
Weekoverweek percent change 





# M/M 
Monthovermonth level change 





% Q/Q 
Quarteroverquarter percent change 





Bil. USD Y/Y 
Yearoveryear currency level change 













Indexed units 





Index 
For specifics, see Mnemonic 411 





Index 2000=100 
Base period year 2000, base value 100 





Index 3Jan2000=85.17 
Base period year 1/3/2000, base value 85.17 





Index 198284=100 
Base value of 100 is average over 19821984 interval 





Index prev. mo.=100 
Relative to previous month 






Note: similar to % M/M 





Index CPPY=100 Index corr. per. 
Relative to corresponding period of previous year 





prev. yr.=100 
Note: similar to % Y/Y 
x 





Diffusion indexes, etc. 





Index=0 
Central value=0, improvement>0, deterioration 





Bal. of Op. Balance 
Balance of opinion

x 





Other 





Rank 
Numeric ranking 





(list) 
E.g., NBERRECM.US: 0=Not recession, 1=recession 




