{
  "experiment_id": "AIEL-2026-0012",
  "analysis_type": "sanitized_time_alignment_summary",
  "period_jst": {
    "start": "2026-09-17",
    "end": "2026-09-26"
  },
  "sample_count": 104,
  "shift_definition": "shift_hours s compares Open-Meteo GTI timestamp T with measured PV generation over the one-hour interval ending at T+s.",
  "correlation_by_shift_hours": {
    "0": 0.7694650702,
    "1": 0.7644722852,
    "2": 0.6353293571,
    "-2": 0.4165536408,
    "-1": 0.6266803195
  },
  "documented_alignment": "shift_hours = 0 because the non-instant hourly radiation value at T is the mean of the preceding hour.",
  "interpretation": "The field series is consistent with the documented alignment, but shift 0 and shift +1 are too close for this field comparison to independently prove the API time semantics.",
  "privacy": "No location, raw PV series, device identifier, spreadsheet identifier, panel geometry, or household schedule is included."
}