What is the most accurate amount of blood pressure

Blood pressure is usually measured most accurately when the human body rises in the morning and has not yet performed any activity. Because the human body is not performing any activity, the blood pressure is in a stable state, but if the blood pressure is measured after the body is active, it may cause the blood pressure value to be higher. At least 2 times in the quiet state on the same day, the systolic blood pressure is higher than 140mmHg, and the diastolic blood pressure is higher than 90mmHg. It is considered hypertension.