How would a wind blowing from 270 degrees be represented in column 3?

When interpreting wind direction in aviation weather reporting, the value represents the direction from which the wind is originating, measured in degrees from true north. A wind blowing from 270 degrees means that the wind is coming from the west. Therefore, in column 3 of weather reporting systems like LAWRS, the correct representation of this wind direction would indeed be the numeric value of 270.

The other options do not correspond to a wind coming from the west. For example, 090 represents wind coming from the east, 180 from the south, and 360 (or 0) indicates wind originating from true north. Thus, only the value of 270 is appropriate for wind coming from that direction.