GHCNM v4 station information plots:

1) station_id.qcf.qcu.diff.gif

plot depicting the differences between non-missing qcf and 
non-missing qcu values for corresponding months.

2) station_id.sourceflags.qcu.gif

plot depicting the source flag (symbol) by month for the station, legend
indicates the symbol's actual data source.

3) station_id.temp.anom.qcf.gif

plot depicting the annual temperature anomalies for the qcf file.

4) station_id.temp.anom.qcu.gif

plot depicting the annual temperature anomalies for the qcu file.

5) station_id.temp.qcf.gif

plot depicting actual temperature values by color.

6) station_id.temp.qcu.gif

plot depicting actual temperature values by color.