CALIBRATION FAILED - no volume result
Coastal Plains RDF (TX)
A real measurement was attempted between two independent LiDAR epochs at this site, but the stable-terrain calibration ring did not pass the pre-registered alignment thresholds - so no volume change is reported. This is a real, evidenced non-result, not a missing measurement.
| Field | Value |
|---|---|
| Epochs | 2006 → 2018 |
| Stable-control offset | 22.1039 m |
| Stable-control sigma | 15.9212 m |
| Reason | datum/alineacion: stable_control_sigma_m=15.9212 (>1.0) o |stable_control_offset_m|=22.1039 (>2.0) |
Machine-readable measurement (full evidence, same numbers as this page):
lmop-1808.json
Method: measure_physical_change() — same unmodified function used across every site in this program, real LiDAR/3DEP epochs via the public hobuinc/usgs-lidar EPT index, calibrated against a stable-terrain control ring. Synthetic 200x200m buffer on the LMOP-declared coordinate — never the legal parcel boundary. Full method: /products/physical-change/.