Table 6.
AP2 summary table: SW T was used as ancillary variable to estimate the SW NC or the SW C input data
| Approach | (a) | (b) | (c) | (d) | ||
|---|---|---|---|---|---|---|
| Eq. (6) | Eq. (6) + difference | Eq. (6) + Const. aver. | Constant average | |||
| Key data | R2 > |0.66| | R2 > |0.66| | R2 > |0.66| | R2 > |0.66| | R2 > |0.66| | R2 > |0.66| |
| for IRWT or T | for IRWT or T | for IRWT or T | for IRWT or T | for IRWT or T | for IRWT or T | |
| SW C | Yes: | Yes: | No: | No: | No: | No: |
| f(IRWT or T) | f(IRWT or T) | SWT-SWNC | Const. Average | SWT-SWNC | Const. Average | |
| SW T | Not used | Yes: | Yes: | Yes: | Yes: | Not used |
| f(IRWT or T) | f(IRWT or T) | f(IRWT or T) | f(IRWT or T) | |||
| SW NC | Yes: | No: | Yes: | No: | No: | No: |
| f(IRWT or T) | SWT-SWC | f(IRWT or T) | SWT-SWC | Const. Average | Const. Average | |
| WP | Yes: | No: | ||||
| f(IRWT or T) | Const. Average | |||||
| PP | Yes: | No: | ||||
| f(IRWT or T) | Const. Average | |||||
If the coefficient of determination (R 2) is > |0.66| (Yes in the table), a linear regression is used with either IRW T or time. If no significant correlation can be established, the average of the past 20 years is used for the future (Constant average in the table).