This plot shows the light levels measured at the sea surface
(red) compared with light measured on the bottom (blue) 78 ft (23.8 m) down
at the East Flower Garden Banks.
Notice how the peaks and valleys in the light data line
up between the platform and the bottom. The low light periods are probably
cloudy days. You should be able to see a gradual increase in light levels
between the winter and summer months.
This trend is generally matched by bottom light levels,
but do you see the low period during the summer that doesn't really match
the trend? Read on to find out more. | 
