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舶用機器 Garmin GDL 30AのPDF オーナーズマニュアルをオンラインで閲覧またはダウンロードできます。Garmin GDL 30A 34 ページ。 Marine weather satellite receiver
Garmin GDL 30A にも： オーナーズマニュアル (34 ページ), 取付説明書 (8 ページ), オーナーズマニュアル (38 ページ), オーナーズマニュアル (40 ページ)
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Pressure
This feature displays pressure isobars and pressure centers on the chartplotter's map. The isobars connect points of equal pressure. Pressure readings can help determine
weather and wind conditions in an area. High pressure areas are generally associated with fair weather. Low pressure areas are generally associated with clouds and the
chance of precipitation. Isobars that are packed closely together show a strong pressure gradient. Strong pressure gradients are associated with areas of stronger winds.
Pressure units can be displayed in Millibars (mb), Inches of Mercury (in), and Hectopascals (hPa). See the chartplotter's Owner's Manual for more information.
Pressure Isobars
Strong Pressure Gradient
GDL 30/30A Owner's Manual