The data can be downloaded as a CSV data dump of all records stored. That is: 15 minute 'smoothed' BG, note records etc. Each has a separate data type. The header record will give you a clue.
Glucose Data,Generated on,17-09-2022 15:40 UTC,Generated by,xxxxxxxxxxxx
Device,Serial Number,Device Timestamp,Record Type,Historic Glucose mmol/L,Scan Glucose mmol/L,Non-numeric Rapid-Acting Insulin,Rapid-Acting Insulin (units),Non-numeric Food,Carbohydrates (grams),Carbohydrates (servings),Non-numeric Long-Acting Insulin,Long-Acting Insulin Value (units),Notes,Strip Glucose mmol/L,Ketone mmol/L,Meal Insulin (units),Correction Insulin (units),User Change Insulin (units)
Have fun!