11-5Lasair® Pro Aerosol Particle Counter Operations Manual
Chapter 11 : Statistics
Figure 11-4 shows the following adjustments to the HOME screen:
• A. Average and cumulative normalized counts: Average values refer to the mean
particle count data for all samples across all locations, directly comparable to
cumulative normalized counts (counts of a certain particle size and larger over the
configured sample volume) for all locations.
• B. Average, maximum, and 95% UCL statistics: Average values refer to the mean
particle count data for all samples across all locations, directly comparable to the
maximum particle size count of all samples, and the 95% Upper Confidence Limit,
a more conservative value indicating how many particles or less of a certain size
are found within the tested locations with 95% certainty.
NOTE: 95% UCL will only be calculated for sample numbers configured as ≥ 2 and ≤ 9.
• C. Average particle counts by size and location: Organizes data into tabular
format by location and the average count for each particle size. Swipe right and le
to view the table in its entirety.
Results
You can print or save a classification report similar in scope to the other standard options
by pressing either or on the bottom-le of display B or C of the HOME
screen (see Figure 11-4). An example is provided in Figure 11-5.
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