If an airport has non-standard IFR alternate minimums information published, you will know by seeing a symbol that looks like a triangle with an 'A' in it on the approach plate in the Notes section.
Approach plate notes section showing the 'A' icon
To view the non-standard IFR alternate minimums information, you will need to go to the Airports page > search for the airport > on the Procedures sub-tab, tap on Arrival > and then look for the Alternate minimums line.
Airports > Procedures > Arrival > Alternate Minimums
If there is an entry, tap on it and swipe through the pages until you find the airport in question.
Alternate minimums page
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