| Figure 7. | Measured ethane absorption near 2983.3 cm-1. Taken long path. Retro-reflector is at 1.487 km (0.92 miles). Measured concentration is 18 ppb. Unknown trace gas exists at 2983.1 cm-1. |
| Figure 7. | Measured ethane absorption near 2983.3 cm-1. Taken long path. Retro-reflector is at 1.487 km (0.92 miles). Measured concentration is 18 ppb. Unknown trace gas exists at 2983.1 cm-1. |