Odour Threshold Investigation 2012 - Bay of Plenty Regional Council

A display of the “round” values shows (Figure 7.9) a skewed histogram which is
quite normal for data of this type. The Panellist session mean data has been chosen
as the primary dataset (Figure 7.10) used in the following analysis as it provides a
suitably smoothed distribution and it is all that is required to see if there is a
difference between the two locations.
Lower level averages or the base level round data would be suitable for testing
aspects of the methodology but are beyond the scope and ability of this
investigation. Some analysis of these finer datasets is briefly investigated in the
following sections as a means of potentially identifying additional investigations. Any
deviations from the session mean analysis will be noted at the time.
Figure 7.9
Graphical summary of the “round” data.
40 Environmental Publication 2012/06–A review of odour properties of H 2 S Odour Threshold Investigation 2012