s="ref-description">
    <p>Selected observations and variables from U.S. Geological Survey water
quality stations in south San Francisco Bay. Data include <acronym>CTD</acronym> and
nutrient measurements.</p>
    </div>


    <div id="format">
    <h2>Format</h2>
    <p><code>sfbay</code> is a data frame with 23207 observations (rows) of 12
variables (columns):</p>
<table class="table table"><tr><td><code>[, 1]</code></td><td><code>date</code></td><td>date</td></tr><tr><td><code>[, 2]</code></td><td><code>