"Field","Record","Evidence or limitation"
"Question and intended target","","Leaf, canopy area or mixed scene"
"Instrument model, serial number and manual","",""
"Spectral band and field-of-view definition","",""
"Distance, angle and footprint estimate","","Manufacturer convention and method"
"Crop coverage and background surfaces","","Observation or documented estimate"
"Crop, stage, leaf position and location","",""
"Direct view or intervening material","",""
"Surface condition and recent irrigation or spraying","",""
"Emissivity setting and its approved basis","",""
"Time, weather and greenhouse operating state","",""
"Infrared reading and instrument check status","",""
"Reference air reading, location and time","",""
"Repeated locations and interpretation limits","",""