The entries in the "daily_weather_data.csv" file related to pain should be interpreted as: Headache: 0 - None, 1 - Happened Severity: 0 - None, 1 - Low, 2 - Mild, 3 - Medium, 4 - High, 5 - Severe Medication: 0, 1, 2, etc. (number of painkillers taken) Relief: 0 - Not applicable, 1 - No relief, 2 - Little, 3 - Mild, 4 - Almost, 5 - Complete