Table 2 The uncertainty of measurement.

Thermocouples

1

 ± 1 °C

− 55 to 180 °C

Solar radiation meter

0.45

 ± 10 W/m²

1–3999 W/m²

Digital anemometer

2.7

 ± 0.5 m/s

0.1–30 m/s

Graduated bottle

2

–

500 ml