GPSMAP 176/176C Owner’s Manual 59M AIN MENU > C ELESTIAL TABtime ranges and sunrise/sunset info may not be available for a fewstations). The solid, light vertical lines represent 4-hour increments,and the light, dotted vertical lines represent 1-hour increments. Agray, vertical line (with a block at the top displaying time) indicatesthe time of day when using current date and intersects the tide graphto show their relation.The tide curve appears as a shaded area; higher tides are taller andlower tides are shorter. The gray, horizontal line (with a block at theleft displaying depth) indicates the current tide height. The MeanLower Low Water (MLLW) appears as a solid, horizontal line nearthe bottom of the chart (this line only appears if the tide ranges tozero or below). The numbers directly below/above LCL and STAindicate the maximum/minimum levels, respectively. The four datafields below the chart indicate event times and levels at which the tidechanges.Searching for Tide StationsTo view the chart for a tide station near your currentlocation:1. From the Tide tab, press FIND, select Tide Stations andpress ENTER.2. Press MENU and select Nearest to Vessel. Select the desiredstation from the list and press ENTER.3. Highlight Show Chart and press ENTER. Selecting Nextreturns to the list with the next station highlighted.