A search in iWeb for how ‘below’ is tagged, reveals that the most common usage is:
1 BELOW (RL) 2387501 locative adverb = This is often C1 grammar related to locating elements in discourse.
(in printed text) mentioned further down on the same page, or further on in the text.
1 (SEE BELOW). 24319
You will be an employee and receive full benefits (see below).
2 BELOW IS A 14077
3 AS SHOWN BELOW. 8771
4 SEE BELOW, 6745
5 THE COMMENTS BELOW. 6423
2 BELOW (II) 514246 simple preposition.
The other ninety percent is below the water where you can’t see it.
ABOVE AND BELOW THE WATER 353
AT OR BELOW THE POVERTY 330
IS POSTED BELOW THIS CASE 262
3 BELOW (RG) 167341
Can we get below 100 dollars a ton?
*hard to find a clear example of below as a grading adverb. Most examples seem to be before numerical values.
BELOW 18 YEARS OF AGE 157