Readability

1 - Unreadable

2 - Barely readable, occasional words distinguishable.

3 - Readable with considerable difficulty.

4 - Readable with practically no difficulty.

5 - Perfectly readable.

Signal Strength

1- Faint signals, barely perceptible.

2- Very weak signals.

3- Weak signals.

4- Fair signals.

5- Fairly good signals.

6- Good signals.

7- Moderately strong signals.

8- Strong signals.

9- Extremely strong signals.