{
  "region": "Chennai",
  "run_folder": "data-analytics/sentinel-ndvi/Chennai-region/2026/04/18/",
  "timestamp_utc": "2026-04-18T11:51:05.516148+00:00",
  "comparison_metrics": {
    "vegetation_metrics": {
      "total_green_cover_pct": 24.09,
      "healthy_vegetation_pct": 3.2,
      "vegetation_health_score": 0.406,
      "total_green_pixels": 3756197,
      "healthy_veg_pixels": 498937
    },
    "urban_form_metrics": {
      "built_up_intensity": 0.007,
      "water_bodies_pct": 22.31,
      "water_pixels": 3478164
    },
    "composite_scores": {
      "green_infrastructure_score": 0.388,
      "ecological_balance_score": 2408.883
    },
    "raw_stats": {
      "ndvi_mean": 0.178,
      "evi_mean": 0.817,
      "ndbi_mean": 0.007,
      "mndwi_mean": -0.192,
      "total_valid_pixels": 15593107
    }
  },
  "indices": {
    "ndvi_ndbi_diff": {
      "stats": {
        "mean": 0.17036035656929016,
        "min": -2.0,
        "max": 1.2459558248519897,
        "std": 0.2199152410030365,
        "nan_pixels": 320297,
        "shape": [
          5986,
          2658
        ]
      },
      "bins": {
        "edges": [
          -2.0,
          -1.35080885887146,
          -0.7016175985336304,
          -0.05242633819580078,
          0.5967648029327393,
          1.2459558248519897
        ],
        "percentages": [
          0.0004462381121538418,
          1.2570087666305403e-05,
          6.835242855350722,
          85.62459005801598,
          7.5397082784334755
        ]
      },
      "outputs": {
        "cog": "cities_ndvi_ndbi_diff_georef_cog.tif",
        "color_png": "cities_ndvi_ndbi_diff_color.png",
        "grey_png": "cities_ndvi_ndbi_diff_greyscale.png",
        "legend_png": "cities_ndvi_ndbi_diff_legend.png",
        "csv": "cities_ndvi_ndbi_diff_bins.csv",
        "json": "cities_ndvi_ndbi_diff_bins.json"
      }
    },
    "urban_heat_index": {
      "stats": {
        "mean": -0.17036035656929016,
        "min": -1.2459558248519897,
        "max": 2.0,
        "std": 0.2199152410030365,
        "nan_pixels": 320297,
        "shape": [
          5986,
          2658
        ]
      },
      "bins": {
        "edges": [
          -1.2459558248519897,
          -0.5967646241188049,
          0.05242657661437988,
          0.7016178369522095,
          1.3508089780807495,
          2.0
        ],
        "percentages": [
          5.526627593806165,
          85.62464033836665,
          6.835192575000057,
          1.2570087666305403e-05,
          2.0135269227394645
        ]
      },
      "outputs": {
        "cog": "cities_urban_heat_index_georef_cog.tif",
        "color_png": "cities_urban_heat_index_color.png",
        "grey_png": "cities_urban_heat_index_greyscale.png",
        "legend_png": "cities_urban_heat_index_legend.png",
        "csv": "cities_urban_heat_index_bins.csv",
        "json": "cities_urban_heat_index_bins.json"
      }
    }
  },
  "overlays": {
    "ndvi_ndbi_overlay": "cities_ndvi_ndbi_overlay.png"
  }
}