UPRtek PG200N User Manual page 26

6.1 General Attributes
Abbreviation Full Name
PSS Phytochrome Photostationary State
It is the ratio of the concentration of phytochrome A red to the total concentration
of phytochrome.
°C
Temperature
Temperature is a physical quantity that expresses hot and cold.
%RH
Relative Humidity
Relative humidity, expressed as a percentage, indicates a present state of
absolute humidity relative to a maximum humidity given the same temperature.
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Unit