 from station 36, in km</td></tr></table><p><code>sfbayVars</code> is a data frame with 7 observations of 3 variables:</p>
<table class="table table"><tr><td><code>[, 1]</code></td><td><code>variable</code></td><td>water quality variable
code</td></tr><tr><td><code>[, 2]</code></td><td><code>description</code></td><td>description</td></tr><tr><td><code>[,
3]</code></td><td><code>units</code></td><td>measurement units</td></tr></table><p><code>sfbayChla</code> is a time series matrix (380 months <code>x</cod