Embedded Files
We often see irregularities in our data, and we need to figure out what they mean. On this page, we'll upload data mysteries we've encountered and their solutions. See if you can solve them!
The Case of the Impossibly Cold BOB
The Case of the Impossibly Cold BOB
According to the Chesapeake Bay Program, water in the Chesapeake ranges from about 1°C to 29°C. But this graph of data collected by BOB from May 28-July 6 of 2023 shows a temperature range from about -125°C to 25°C. YES, that's MINUS 125°! What is BOB trying to tell us?
🔎 Click here for solution.🔍
The Case of the Strange Temperature Spikes
The Case of the Strange Temperature Spikes
We placed two BOBs in a brackish classroom aquarium, measuring the temperature of the air and the water at surface and bottom. BOB 07 behaved as expected, with temps getting cooler from air to surface to bottom. But BOB 01 shows surface water temperature spikes way above the air temperatures from the time it was placed in the aquarium until about 5 pm. The spike reappeared around 8 am the next morning. Even when BOB 01's surface water temperature data fell overnight, they followed the air temperature closely. This trend continued over the next few weeks. Surface water temperatures never dipped much lower than the air temperature readings, with heat spikes appearing every weekday from around 8 am to 5 pm. What do you think BOB 01 is saying?
🔎 Click here for solution.🔍
The Case of the Tomato Juice Watershed
The Case of the Tomato Juice Watershed
BOB's pH meter with storage cap
Around the time of BOB's placement in the tidal St. Mary's River on September 1, 2023, his pH sensor took readings just above 4 units, which is about the acid level contained in tomato juice. According to the Maryland Department of Natural Resources, the "The average pH in the Chesapeake Bay tidal areas is generally between 7 and 9," NOTHING like tomato juice. What might BOB be telling us here?
🔎 Click here for solution.🔍
Page updated
Google Sites
Report abuse