| Figure 4. | Measured ethane absorption near 2996.8 cm-1. Taken long path. Retro-reflector range is 1.487 km (0.92 miles). Measured through test sampling tube. Measured value is 113 ppm. |
| Figure 4. | Measured ethane absorption near 2996.8 cm-1. Taken long path. Retro-reflector range is 1.487 km (0.92 miles). Measured through test sampling tube. Measured value is 113 ppm. |