Table 2
Summary statistics of phase-specific degradation rates across eight PV sites. The table reports descriptive statistics for the segment-wise degradation rates (%/year) underlying the boxplots in Figure 7. For each site, the number of inverters analyzed, and the total analysis period are listed, followed by the minimum, lower quartile (Q1), median, upper quartile (Q3), and maximum phase degradation rates derived from the piecewise linear regression of PRI trends.
| Site | # Inverters | Period (years) | Min | Q1 | Median | Q3 | Max |
|---|---|---|---|---|---|---|---|
| A | 3 | 6 | −1.422 | −0.984 | −0.390 | −0.246 | −0.165 |
| B | 9 | 5 | −2.422 | −0.823 | −0.437 | −0.275 | +0.063 |
| C | 8 | 6 | −4.412 | −1.724 | −1.073 | −0.538 | −0.083 |
| D | 8 | 2 | −1.921 | −1.798 | −0.478 | −0.265 | +0.758 |
| E | 25 | 7 | −0.364 | +0.003 | +0.073 | +0.250 | +3.370 |
| F | 29 | 7 | −1.191 | −0.136 | −0.054 | +0.120 | +2.717 |
| EURAC | 1 | 7 | −2.490 | −1.452 | −1.407 | −0.816 | −0.120 |
| FOSS | 1 | 10 | −2.314 | −0.733 | −0.086 | +0.075 | +0.196 |
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