Campbell Scientific RTDAQ Software - Manual (Page 172)

Section 7. Monitoring Data in Real-time
Care should be taken in choosing between these options when NOTE
running a program with extremely fast data generation (i.e.,
several hundred records per second). As a general rule, Graph
All Data should be used when looking at a large Graph Width
(time span) with fast data generation. Fill Graph Width may be
useful when looking at a smaller Graph Width with fast data
generation. The best option will depend on your PC, datalogger,
and datalogger program. Therefore, experimentation may be
necessary to determine the best option. Differences between the
options will diminish with slower data generation rates.
These options all function the same when graphing values from NOTE
the Public table which contains only one record.
7.4.7 Drawing Methods used by the Graph Screen
7-20