Depending on the country, financial statements are published at different intervals. While American companies publish reports once a quarter, many European companies publish reports every six months or once a year.
If a company publishes a report every six months, then data on quarterly financial fields will be absent.
Below is a table of typical reporting frequency (for the countries where most companies adhere to a certain frequency):
It is worth noting that this information is not universal, individual companies may publish their financial statements without adhering to the frequency noted above.