This is the file where MX stores its Weather Diary

Introduction

The weather diary is created specifically to record any snowfall, but as you can store a comment with any content, a number of Cumulus users are using it to record other entries that can be specific to a day (e.g. hailstorms), or indeed anything that might be recorded in a diary.

The database uses SQLite format and a script to read this can be found in Weather Diary article.

Each record has the following content:

Date
Time (always 00:00:00)
Snow Falling (boolean)
Snow Lying (boolean)
Snow depth (unsigned decimal number)
Entry (a text field for storing comments

Diary.db

Introduction