Division 2.5 Meteorological instrumentation
United Kingdom
The meteorological instrumentation used to monitor the environmental conditions during the test shall include the following devices, which meet at least the accuracies listed below:
temperature measuring device, ± 1 °C;
wind speed-measuring device, ± 1,0 m/s;
barometric pressure measuring device, ± 5 hPa;
a relative humidity measuring device, ± 5 %.