In Logbook Insights you will be able to view an analysis of your catches based on:

Everytime you log a catch, Fishbrain collects weather and environment data for the location and time of the catch. In Logbook Insights, your catch data is aggregated and visualized to help you understand what conditions seem to affect when you catch fish. The more catches you log, the more data you will see. 

To get the most out of your Logbook, always log an exact catch location and make sure the time of the catch is correct. The data is also collected whether your catches are logged as competitive or private.