Richard,

39970 is the station level pressure, not corrected to sea level.

91150 is the time of observation (1150UTC)

553XX is sunshine in past hour (0.0)

20765 is to do with global radiation, the figure from which the hourly
sun is derived.

Regards
Philip

Richard Griffith wrote:
Dear All,

I can decode most of the the synop code, but not sure of a couple of a
items, can anyone assist please ?

03772 11484 72705 10145 20105 39970 40000 52012 69901 70365 84831
91150 333 55300 20765 81816 84646 87080=

Group 3 ? 39970
Group 9 ? 91150
Group 5 ? (Sunshine ? = 5.3hrs?)
Group 2 20765

Regards

Richard