Document ID: chunk:federal_register_of_legislation:F2015L00682:reg:98
Version: federal_register_of_legislation:F2015L00682
Segment Type: reg
Provision Reference: reg 98
Character Range: 129059–130883

98  Calculating the mean ratio of change in PSP carbon stock
 (1) The calculation of the weighted mean for the values of PSP carbon stock change ratios must:
 (a) be carried out in accordance with Equation 9a; and
 (b) incorporate a standard error calculation in accordance with Equation 9b.
 (2) For this section, if, for a particular sample plot ,  is zero, treat the plot as if:
 (a) it was not a PSP in the th stratum; and
 (b) it was not assessed during the reporting period.
 (3) The weighted average for the values of PSP carbon stock change ratios is to be calculated using the following formula:
   Equation 9a

  where:
 =  weighted mean ratio of change in PSP carbon stock for sample plots occurring in the th stratum for the reporting period.
 =  ratio of change in PSP carbon stock, for the th sample plot in the th stratum for the reporting period, calculated in accordance with Equation 10.
 =  carbon stock in carbon pools assessed for the th sample plot in the th stratum for the most recent previous reporting period where a full inventory was undertaken in tonnes per hectare of CO2‑e (t.ha‑1 CO2‑e), calculated in accordance with Equation 12.
 =  number of sample plots assessed in the th stratum during the reporting period.

 (4) When calculating the mean ratio of change in PSP carbon stock, the standard error is to be calculated using the following formula:
   Equation 9b

  where:
 =  standard error for weighted mean ratio of change in PSP carbon stock for permanent sample plots in the th stratum for the reporting period.

 =  standard deviation of the ratios of change in PSP carbon stock for permanent sample plots in the th stratum for the reporting period, , calculated in accordance with Equation 10.

 =  number of sample plots assessed in the th stratum during the reporting period.