0
These data are very variable around the world.
- IUPAC recommendations:
a) 0 oC and 100 kPa or
b) 25 oC and 100 kPa
- NIST recommendation:
20 0 oC and 101,325 kPa
- methane gas measurements: 15 oC
and other values also exist.
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What is a list of the standard conditions for gas measurements?
Standard temperature and pressure (STP) is a temperature 0ºC (32ºF) with the air pressure the same as at sea level.
Measurements that fall beyond three standard deviations?
It is one of the informal definitions for an outlier.
Measurements that fall beyond three standard deviations from the mean?
I believe outliers is the best answer to this question. The previous answer was average, which is the mean.
What does a high figure of standard error mean?
A large degree of variation between individual measurements, in terms of the units used.
What does this mean Nm3?
Nm3 is a common unit used in industry to refer to gas emissions or exchange. It stands for Normal cubic meter. "Normal" is always dependant on the individual circumstances of each gas, pressure, and use. To convert Nm3 to a cubic foot of gas (under standard conditions), multiply by 38.04. Therefore, 1,000 Nm3/day = 1 kNm3/day = 38,040 cf/day.
