Your talk with the lab technicians revealed a lot about the data. Four times a day, at 8:00, 12:00, 16:00, and 20:00, each technician checks the plots in one or two labs. They use a paper form to record values at each plot, recording all values to two decimal places. This usually takes 30 to 40 minutes per lab, and the whole process typically takes 90 minutes.
Each plot has an environmental sensor that detects the light, temperature, and humidity at the plot. Unfortunately, these devices are prone to failure, indicated by an Equipment Fault light on the unit. Technicians record if this light is lit, since it invalidates the environmental data.
Finally, the technicians tell you about the units and ...
