Changes for page Guidelines on Non-Calendar Year Reporting of Data

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19	19	It is also required to take into account reporting frequencies other than annual (e.g. quarterly, monthly). The use cases lined out above can be visualised graphically. Note that, in this example, all time spans would use the year 2015 (“2015” or “2015-A1”) as the reference year in reporting:
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21		-| |A|(% colspan="12" %)2014|(% colspan="12" %)2015|(% colspan="12" %)2016
22		-|Case|Q|(% colspan="3" %)1|(% colspan="3" %)2|(% colspan="3" %)3|(% colspan="3" %)4|(% colspan="3" %)1|(% colspan="3" %)2|(% colspan="3" %)3|(% colspan="3" %)4|(% colspan="3" %)1|(% colspan="3" %)2|(% colspan="3" %)3|(% colspan="3" %)4
23		-|1| | | | | | | | | | | | | |(% colspan="12" %) | | | | | | | | | | | |
24		-|2a| | | | | | | | | | | | | | | | | | | | | |(% colspan="12" %) | | | |
25		-|2b| | | | | | | | | | | | | | | | | | | |(% colspan="12" %) | | | | | |
26		-|3| | | | | | | | | | | | | | | | |5+|(% colspan="11" %) |-4| | | | | | | |
27		-|4| | | | | | | |(% colspan="12" %) | | | | | | | | | | | | | | | | | |
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	21	+[[image:1768553211015-575.png]]
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	23	+Assuming that the time dimension has the ID TIME_PERIOD, case 1 could use TIME_PERIOD=”2015”. All other cases would need to use the notation TIME_PERIOD=”2015-A1”. For the rest of the document we use the more general notation “2015-A1”. [[~[1~]>>path:#_ftn1||style="background-color: rgb(255, 255, 255);"]]
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32		-Assuming that the time dimension has the ID TIME_PERIOD, case 1 could use TIME_PERIOD=”2015”. All other cases would need to use the notation TIME_PERIOD=”2015-A1”. For the rest of the document we use the more general notation “2015-A1”. [[~[1~]>>path:#_ftn1]]
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34	34	For quarterly or monthly data, the first period of the reporting year would also need to be read as relative to the start of the reporting year. Here are examples for case 2 if the data is quarterly (2a) or monthly (2b):
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36		-| |A|(% colspan="12" %)2014|(% colspan="15" %)2015|(% colspan="14" %)2016
37		-|Case|Q|(% colspan="3" %)1|(% colspan="3" %)2|(% colspan="3" %)3|(% colspan="3" %)4|(% colspan="3" %)1|(% colspan="3" %)2|(% colspan="5" %)3|(% colspan="4" %)4|(% colspan="4" %)1|(% colspan="4" %)2|(% colspan="3" %)3|(% colspan="3" %)4
38		-|2a| | | | | | | | | | | | | | | | | | | |(% colspan="2" %) |(% colspan="2" %) |(% colspan="4" %)Q1|(% colspan="4" %)Q2|(% colspan="4" %)Q3|(% colspan="3" %)Q4| | | |
39		-|2b| | | | | | | | | | | | | | | | | | | |1|(% colspan="2" %)2|(% colspan="2" %)3|.|.|(% colspan="2" %).| | |(% colspan="2" %) | | |(% colspan="2" %) | | | | | |
40		-| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
	27	+[[image:1768553250696-532.png]]
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44	44	Note that in case 2a, the third quarter of reporting year 2015 (TIME_PERIOD=2015-Q3) is covering data from March until June 2016. In case 2b, the seventh month of reporting year 2015 (TIME_PERIOD=2015-M07) is covering data for January 2016.
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46	46	It is clear in the graphical view that time series under case 2b should not be directly compared with time series under case 4. If it is required to compare figures of the same time period, the 2015 observation of the type 2b series is compared with the 2016 figure of the type 4 series. Comparing a 2a series with others from the example may be more complicated, because exact alignment of the timelines might not be possible without additional data. It is possible to estimate aligned timelines by doing a time transformation using formulas; for instance, shifting the time series to comply with the calendar year. The methodological aspects of time transformation are not part of these guidelines. For coding the results of such transformations, please refer to the guidelines on coding time transformations in SDMX[[~[2~]>>path:#_ftn2]].

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