GEMSXP allows for very easy creation and edition of groups of
locations and groups of parameters to use in the “Data Query”
screen. These groups can be very useful for analysis based on
geographic location, sample location type, or parameters.
A good example would be BTEXM which is a parameter group associated
with petroleum. Benzene, Toluene, Ethylbenzene, Xylenes, and
MTBE are included in this group.
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