How long should you wait after attaching the thermometer to the tripod before taking readings from the WGBT?

The correct duration to wait after attaching the thermometer to the tripod before taking readings from the Wet Bulb Globe Temperature (WGBT) is ten minutes. This waiting period is essential for ensuring that the thermometer has adequately acclimated to the environmental conditions. The thermometer needs enough time to stabilize and reflect the true temperature reading influenced by factors like air temperature, humidity, and solar radiation.

If you take the reading too soon, it may provide an inaccurate measure of the heat stress that individuals could experience in that environment. The ten-minute duration aligns with best practices in field sanitation and heat stress management, allowing for reliable and effective monitoring of conditions. This is crucial for ensuring that measures can be taken to protect individuals from heat-related illnesses.

The other options, while they may seem reasonable, do not provide the necessary time for the thermometer to adjust properly, thus compromising the accuracy of the temperature readings.