CCHMN sites 102021 CAL448 26.677241 -81.85233414 1.2 no bottoms CAL394 26.54280668 -81.96011439 1.2 no bottoms CAL387 26.52469926 -81.97695135 3.9 bottoms CAL393 26.53683933 -81.97375585 1.5 no bottoms CAL417 26.58434773 -81.92668559 1.2 no bottoms