Add ncedc/1991

ncedc/1991/0000.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:2b037695bd7e6b9779b56ee9d37c625725f7faa1817e4097d24e354777d64109
+size 38945755

ncedc/1991/index.parquet

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a540bacfa79fd230d3c8cd2580644cb2a9dd0f2d292739f0372ccdbe07724a91
+size 235619

ncedc/1991/manifest.json

@@ -0,0 +1,87 @@
+{
+ "region": "NC",
+ "year": 1991,
+ "rule": "analyst-ps-firstmotion-pickmeta-v1",
+ "rows": 1908,
+ "events": 1129,
+ "shards": 1,
+ "bytes": 38945755,
+ "source_days": 365,
+ "columns": [
+  "event_id",
+  "event_time",
+  "event_latitude",
+  "event_longitude",
+  "event_depth_km",
+  "event_magnitude",
+  "event_magnitude_type",
+  "event_time_index",
+  "event_type",
+  "event_magnitude_code",
+  "event_evaluation_mode",
+  "event_azimuthal_gap",
+  "event_used_phase_count",
+  "event_associated_station_count",
+  "event_rms_residual_sec",
+  "event_horizontal_uncertainty_m",
+  "event_depth_uncertainty_m",
+  "network",
+  "station",
+  "location",
+  "instrument",
+  "station_latitude",
+  "station_longitude",
+  "station_elevation_m",
+  "station_depth_km",
+  "local_depth_m",
+  "waveform",
+  "component",
+  "z_sign",
+  "z_sign_source",
+  "raw_sampling_rate",
+  "unit",
+  "snr",
+  "coverage",
+  "begin_time",
+  "end_time",
+  "source",
+  "p_phase_time",
+  "p_phase_index",
+  "p_phase_score",
+  "p_phase_polarity",
+  "p_phase_remark",
+  "p_phase_evaluation_mode",
+  "p_time_residual",
+  "p_location_weight",
+  "s_phase_time",
+  "s_phase_index",
+  "s_phase_score",
+  "s_phase_remark",
+  "s_phase_evaluation_mode",
+  "s_time_residual",
+  "s_location_weight",
+  "azimuth",
+  "back_azimuth",
+  "takeoff_angle",
+  "distance_km",
+  "strike",
+  "dip",
+  "rake",
+  "num_first_motions",
+  "first_motion_misfit",
+  "num_sp_ratios",
+  "sp_ratio_misfit",
+  "plane1_uncertainty",
+  "plane2_uncertainty",
+  "strike_uncertainty",
+  "dip_uncertainty",
+  "rake_uncertainty",
+  "fm_quality"
+ ],
+ "dropped_columns": [
+  "duplicate_of",
+  "s_phase_polarity"
+ ],
+ "build_time": "2026-09-08T05:56:36.334537+00:00",
+ "script_commit": "8d70bd7de8f9227de638d620ba1b10e1574e2bda"
+}