Notes:
1. The calibration marks are suggested values; specific numbers might need to be adjusted based on the type of coffee beans used, roast level, and personal taste.
2. Calibration of the distributor should be done in conjunction with the grind size and the amount of coffee powder to achieve the best extraction results.
3. The "grind size" in the table is a rough reference; the exact grind level should be adjusted according to the actual situation.