| Description | Range (a) | Range (b) | Range (c) | ||
| Range of values | Range value interval | 0 to 2 | 3 to 10 | 2 to 3 | |
| Radius (r) range to apply | 0 to 10 | 5 to 0 | 10 to 0 | ||
| Symbol | Rmax | Radius top value | 10 | 5 | 10 |
| Vmax | Range top value | 2 | 10 | 3 | |
| Vmin | Range minimum value | 0 | 3 | 2 | |
| V | Experimental value | V | V | V | |
| Equations | r = Radius value calculated | r = (RmaxV)/(Vmax) | r = (Rmax(Vmax-V))/ (Vmax- Vmin) | r = (Rmax(Vmax-V))/ (Vmax- Vmin) |