Example g_plots.tbl to plot MM5 sigma-level data on isentropic levels:

TIME LEVELS: FROM 1993-03-13_00 TO 1993-03-14_00 BY 6
PRESSURE LEVEL MANDATORY: FROM SFC TO PTOP (ignored)
PRESSURE LEVEL NON STANDARD: FROM SFC TO PTOP BY 3 (ignored)
SIGMA LEVEL: FROM 3 TO KMAX BY 5
TITLE: SOC - MM5V3 - EXAMPLE PLOT TABLE FOR SIGMA DATA
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PLOT | FIELD | UNITS |  CONTOUR | SMOOTH || OVERLAY | UNITS |  CONTOUR | SMOOTH
T/F  |       |       | INTERVAL | PASSES ||  FIELD  |       | INTERVAL | PASSES
-----|-------|-------|----------|--------||---------|-------|----------|-------
TI330| PV    |Km/s^3Pa|    1.   |   0    ||         |       |          |
TI330| P     |  mb   |     4.   |   0    ||         |       |          |
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