By setting the threshold target price to 36 pence this Applet will populate a row in a Google Sheet titled Octopus_Agile in the folder octopus_agile every time the price changes.
The data populated can be constrained to before and after times - e.g. if you just wish to track morning prices.
The rows in the Google sheet will have date/time, price, time the Applet was triggered, price used to trigger and the optional before/after time setting.
Popular services on IFTTT