In recent measurements, the water level had dropped about 600 feet.
Later they got a small ground to train on, but it was only 20 x 40 m2 in measurements.
No longer is the speed of light something that will change with each new improvement in measurement.
Faculty within the department are experts in measurement and assessment.
Equally important a factor in measurement is reading a scale.
The final reason to be skeptical is the fact that this effect hasn't shown up in previous measurements.
In hourly measurements of these cities until 20 March, no significant changes were reported.
However in most measurements, an uncertainty of 1 x 10 is adequate.
This results in more accurate measurements, which yield new standards.
For any individual, an error in measurement is not a completely random event.