Equation 1:

Where:

n = Number of data points.

Equation 2:

Equation 3:

Equation 4:

Equation 5:

Where:

Mtime period = Hg mass emissions for the given time period i.e., quarter or year-to-date, rounded to the nearest thousandth, (ounces).

Mh = Hg mass emissions for the hour, rounded to three decimal places, (ounces).

n = The number of hours in the given time period (quarter or year-to-date).