The graphs below show the data from the Lake Sunapee GLEON buoy which operates 24/7, 365 days of the year. It collects data every ten minutes.
The following graph shows the water temperature over the last 120 days, in degrees Celsius. Temperature readings are taken from sixteen depths, ranging from the surface to 13 meters (about 43 feet) deep in the lake.
To convert from Celsius to Fahrenheit, multiply by 1.8 and add 32, or use the converter here.
To convert from meters to feet, multiply by 3.3, or use the converter here.
The following graph shows the water temperature over the last 48 hours, in degrees Celsius. Temperature readings are taken from sixteen depths, ranging from the surface to 13 meters (about 43 feet) deep in the lake.
These data have not yet been quality controlled, so you may see some anomalous readings caused by phenomena such as transient sensor failures.
To convert from Celsius to Fahrenheit, multiply by 1.8 and add 32, or use the converter here.
The following graph shows the air temperature over the last 48 hours, in degrees Celsius. The air temperature is measured on top of the buoy.
To convert from Celsius to Fahrenheit, multiply by 1.8 and add 32, or use the converter here.
The following graph shows the wind speed over the last 48 hours, in meters/second.
To convert from meters/second to miles/hour, multiply by 2.4, or use the converter here.
The following graph shows the wind direction over the last 48 hours, in degrees.

The following graph shows the dissolved oxygen over the last 7 days, in milligrams per liter (mg/L). Conveniently, because one liter of water has a mass of one kilogram, 1 part per million (PPM) is equal to 1 mg/L.