F6 Report (column 16)

[BAXTERCA2]

Hi All ~
I'd like to say sorry up front. I have a question about the F6 report and my question may have gotten buried in the December Snow Contest post. My error for posting the question there. Live and learn.

The below list of symbols is on the bottom of the F6 report so, I started trying to figure out what column is 16. I was more confused when I saw 70, 100 and 30 in the column that I thought was 16, where does zero come from. Plus Brad confused me even more .

The answer is out there somewhere. So my questions are what column is 16 and if 0 is used what does it represent?
SYMBOLS USED IN COLUMN 16
1 = FOG
2 = FOG REDUCING VISIBILITY
TO 1/4 MILE OR LESS
3 = THUNDER
4 = ICE PELLETS
5 = HAIL
6 = GLAZE OR RIME
7 = BLOWING DUST OR SAND
RED. VIS. TO 1/2 MILE OR LESS
8 = SMOKE OR HAZE
9 = BLOWING SNOW
X = TORNADO

[Brad]

I admit I confused her - and me.

[BAXTERCA2]

I think I figured it out. The last column could be 16 "weather occur". If yes, then the symbols seem to work.