| Rs | NkT/e | ||||||
Ultraviolet light illumination | Off | On | Off | On | ||||
γ-irradiation | Off | On | Off | On | Off | On | Off | On |
Decreasing voltage | −0.6836* | −11.245* | 13.583 | −2.7328* | 0.3585 | 0.587 | 13.966 | 1.0367 |
Increasing voltage | −9.8453* | −2.528* | −2.5667* | 6.4454 | 0.0248 | 0.1047 | 0.5911 | 1.9939 |