| Manual ellipsometer | ABBE | ||||
| Temperature (K) | Δ (˚) | ψ (˚) | ne | Reading (˚) | na |
| 297.0 | −2.42 | 6.18 | 1.5086 | 22.321 | 1.5074 |
| 309.0 | −2.42 | 6.18 | 1.5086 | 22.309 | 1.5072 |
| 321.0 | −2.49 | 6.19 | 1.5082 | 22.288 | 1.5070 |
| 335.0 | −2.53 | 6.20 | 1.5079 | ||
| 375.0 | −2.48 | 6.22 | 1.5072 | ||
| 427.0 | −2.46 | 6.24 | 1.5065 | ||