Water Temperature; Wave Period - Garmin GXM 30 Owner's Manual

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EATHER EATURES

Water Temperature

The Water Temperature feature displays the water's surface
temperature. The temperature breaks are indicated by isotherm
lines.
Water Temperature
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> W T
ATER EMPERATURE AND
W P
AVE ERIOD

Wave Period

The Wave Period feature provides the time (in seconds)
between successive waves.
Wave Period
GXM 30 XM Radio Smart Antenna Owner's Manual