"At the equator, summer highs can reach 70 degrees Fahrenheit (about 20 Celsius). But in the middle latitudes, where the observations disclosed Thursday were taken, temperatures range from about 32 degrees F at summer noon to overnight lows of -75 F (-60 C)."
"The water implicated in the new study is expected to be briny because previous study of Mars has shown that its surface is salty. The flows are finger-like and small; nowhere near the size of major rivers on Earth. They are also very narrow: 0.5 to 5 yards, or meters, wide."
umm...i know i'm a fairly large guy, but that seems a tad small for swell...still pretty cool tho. the patterns in the pics do seem consistent w/ water flow, at least as it's observed here on earth.