| Age | Rate per minute |
| New born | 140-130 |
| 1 month | 130-120 |
| 1 yr | 120-110 |
| 2 | 108-90 |
| 3 | 90-80 |
| 7 | 80-85 |
| 10-20 | 85-80 |
| 21-60 | 80-70 |
| Over 60 yrs | 65-60 |