[
    {
        "node_id": "node01",
        "folder": "waspmote_1",
        "url": "waspmote_1/waspmote_data.php",
        "dashboard": "waspmote_1/waspmote_dashboard.html",
        "online": true,
        "file_age_s": 1921,
        "stale_threshold_s": 3600,
        "last_seen": "2026-11-05T18:11:21Z",
        "aqi": 212,
        "battery_pct": 100,
        "sensors": {
            "co": 35.2899,
            "so2": 0.285,
            "o3": 0.129,
            "no2": 0,
            "pm1": 1.14,
            "pm25": 1.49,
            "pm10": 1.51,
            "temp": 19.56,
            "hum": 52.19,
            "pres": 1005.612,
            "ox": null,
            "no": null,
            "nh3": null,
            "h2s": null,
            "sox": null,
            "mics_ox": null,
            "mics_red": null,
            "mics_nh3": null,
            "lux": null,
            "prx": null,
            "sound_rms": null,
            "sound_max": null,
            "sound_spl": null,
            "co2": null,
            "voc": null,
            "laeq": null,
            "wind_speed": null,
            "solar": null,
            "no2_cal": null,
            "o3_cal": null
        },
        "meta": {
            "board": "Plug & Sense ENV",
            "sensor_board": "Gases Pro v3",
            "sample_interval": 1800
        },
        "board": "Plug & Sense ENV",
        "sensor_board": "Gases Pro v3",
        "wifi_module": "Wi-Fi Pro SMTG2",
        "ssid": "HomeNet",
        "sample_interval_s": 1800,
        "status": "online"
    },
    {
        "node_id": "node02",
        "folder": "waspmote_2",
        "url": "waspmote_2/waspmote_data.php",
        "dashboard": "waspmote_2/waspmote_dashboard.html",
        "online": true,
        "file_age_s": 434,
        "stale_threshold_s": 3600,
        "last_seen": "2026-11-05T18:36:08Z",
        "aqi": 13,
        "battery_pct": 83,
        "sensors": {
            "co": 0.9649,
            "so2": null,
            "o3": 0,
            "no2": 0.0217,
            "pm1": null,
            "pm25": null,
            "pm10": null,
            "temp": 18.6,
            "hum": 51.2,
            "pres": 1007.6,
            "ox": 0,
            "no": 0.1593,
            "nh3": null,
            "h2s": 0,
            "sox": 0.0139,
            "mics_ox": null,
            "mics_red": null,
            "mics_nh3": null,
            "lux": null,
            "prx": null,
            "sound_rms": null,
            "sound_max": null,
            "sound_spl": null,
            "co2": null,
            "voc": null,
            "laeq": null,
            "wind_speed": null,
            "solar": null,
            "no2_cal": null,
            "o3_cal": null
        },
        "meta": {
            "board": "Waspmote Pro v1.5",
            "sensor_board": "Gases Pro v3",
            "sample_interval": 1800
        },
        "board": "Waspmote Pro v1.5",
        "sensor_board": "Gases Pro v3",
        "wifi_module": "Wi-Fi PRO V3",
        "ssid": "HomeNet",
        "sample_interval_s": 1800,
        "status": "online"
    },
    {
        "node_id": "node03",
        "folder": "waspmote_3",
        "url": "waspmote_3/waspmote_data.php",
        "dashboard": "waspmote_3/waspmote_dashboard.html",
        "online": true,
        "file_age_s": 179,
        "stale_threshold_s": 3600,
        "last_seen": "2026-11-05T18:40:23Z",
        "aqi": 139,
        "battery_pct": 73,
        "sensors": {
            "co": 0,
            "so2": null,
            "o3": 0.0871,
            "no2": 0.2311,
            "pm1": null,
            "pm25": null,
            "pm10": null,
            "temp": 19.9,
            "hum": 46.9,
            "pres": 1006.27,
            "ox": 0.0871,
            "no": null,
            "nh3": 0,
            "h2s": 0.0512,
            "sox": 0,
            "mics_ox": null,
            "mics_red": null,
            "mics_nh3": null,
            "lux": null,
            "prx": null,
            "sound_rms": null,
            "sound_max": null,
            "sound_spl": null,
            "co2": null,
            "voc": null,
            "laeq": null,
            "wind_speed": null,
            "solar": null,
            "no2_cal": null,
            "o3_cal": null
        },
        "meta": {
            "board": "Waspmote Pro v1.5",
            "sensor_board": "Gases Pro v3",
            "sample_interval": 1800
        },
        "board": "Waspmote Pro v1.5",
        "sensor_board": "Gases Pro v3",
        "wifi_module": "Wi-Fi PRO V3",
        "ssid": "HomeNet",
        "sample_interval_s": 1800,
        "status": "online"
    },
    {
        "node_id": "node04",
        "folder": "waspmote_4",
        "url": "waspmote_4/waspmote_data.php",
        "dashboard": "waspmote_4/waspmote_dashboard.html",
        "online": false,
        "file_age_s": 1374072,
        "stale_threshold_s": 3600,
        "last_seen": "2026-10-20T21:02:10Z",
        "aqi": 1068,
        "battery_pct": null,
        "sensors": {
            "co": null,
            "so2": null,
            "o3": null,
            "no2": null,
            "pm1": 1.63,
            "pm25": 2.742,
            "pm10": 4.522,
            "temp": 27.86,
            "hum": 42.543,
            "pres": 997.511,
            "ox": null,
            "no": null,
            "nh3": null,
            "h2s": null,
            "sox": null,
            "mics_ox": 177.943,
            "mics_red": 502.097,
            "mics_nh3": 188.687,
            "lux": 1,
            "prx": 63,
            "sound_rms": -10.94,
            "sound_max": -5.74,
            "sound_spl": null,
            "co2": null,
            "voc": null,
            "laeq": null,
            "wind_speed": null,
            "solar": null,
            "no2_cal": null,
            "o3_cal": null
        },
        "meta": {
            "board": "Raspberry Pi Zero 2W",
            "sensor_board": "Enviro+",
            "sample_interval": 1200
        },
        "board": "Raspberry Pi Zero 2W",
        "sensor_board": "Enviro+",
        "wifi_module": "built-in Wi-Fi",
        "ssid": "HomeNet",
        "sample_interval_s": 1200,
        "status": "offline"
    },
    {
        "node_id": "node05",
        "folder": "waspmote_5",
        "url": "waspmote_5/waspmote_data.php",
        "dashboard": "waspmote_5/waspmote_dashboard.html",
        "online": true,
        "file_age_s": 671,
        "stale_threshold_s": 3600,
        "last_seen": "2026-11-05T18:32:11Z",
        "aqi": 752,
        "battery_pct": null,
        "sensors": {
            "co": null,
            "so2": null,
            "o3": null,
            "no2": null,
            "pm1": 1.579,
            "pm25": 1.941,
            "pm10": 2.416,
            "temp": 27.87,
            "hum": 42.654,
            "pres": 993.159,
            "ox": null,
            "no": null,
            "nh3": null,
            "h2s": null,
            "sox": null,
            "mics_ox": 125.343,
            "mics_red": 328.549,
            "mics_nh3": 176.234,
            "lux": 0,
            "prx": 4,
            "sound_rms": -10.46,
            "sound_max": -5.51,
            "sound_spl": null,
            "co2": null,
            "voc": null,
            "laeq": null,
            "wind_speed": null,
            "solar": null,
            "no2_cal": null,
            "o3_cal": null
        },
        "meta": {
            "board": "Raspberry Pi Zero 2W",
            "sensor_board": "Enviro+",
            "sample_interval": 1200
        },
        "board": "Raspberry Pi Zero 2W",
        "sensor_board": "Enviro+",
        "wifi_module": "built-in Wi-Fi",
        "ssid": "HomeNet",
        "sample_interval_s": 1200,
        "status": "online"
    },
    {
        "node_id": "node06",
        "folder": "waspmote_6",
        "url": "waspmote_6/waspmote_data.php",
        "dashboard": "waspmote_6/waspmote_dashboard.html",
        "online": true,
        "file_age_s": 340,
        "stale_threshold_s": 3600,
        "last_seen": "2026-11-05T18:37:42Z",
        "aqi": 860,
        "battery_pct": null,
        "sensors": {
            "co": null,
            "so2": null,
            "o3": null,
            "no2": null,
            "pm1": 3.19,
            "pm25": -3.93,
            "pm10": -0.41,
            "temp": 27.908,
            "hum": 43.859,
            "pres": 999.104,
            "ox": null,
            "no": null,
            "nh3": null,
            "h2s": null,
            "sox": null,
            "mics_ox": 143.353,
            "mics_red": 292.023,
            "mics_nh3": 160.14,
            "lux": 1,
            "prx": 11,
            "sound_rms": -10.78,
            "sound_max": -5.68,
            "sound_spl": null,
            "co2": null,
            "voc": null,
            "laeq": null,
            "wind_speed": null,
            "solar": null,
            "no2_cal": null,
            "o3_cal": null
        },
        "meta": {
            "board": "Raspberry Pi Zero 2W",
            "sensor_board": "Enviro+",
            "sample_interval": 1200
        },
        "board": "Raspberry Pi Zero 2W",
        "sensor_board": "Enviro+",
        "wifi_module": "built-in Wi-Fi",
        "ssid": "HomeNet",
        "sample_interval_s": 1200,
        "status": "online"
    },
    {
        "node_id": "smartspot_7",
        "folder": "smartspot_7",
        "url": "smartspot_7/smartspot_data.php",
        "dashboard": "smartspot_7/smartspot_dashboard.html",
        "online": false,
        "file_age_s": null,
        "stale_threshold_s": 3600,
        "last_seen": null,
        "aqi": 66,
        "battery_pct": null,
        "sensors": {
            "no2_cal": 31.8,
            "o3_cal": 65.9,
            "co": 2.42,
            "laeq": 56.7,
            "temp": 18.4,
            "hum": 66.5,
            "pres": 999.9,
            "pm25": 3.6,
            "pm10": 45.8,
            "pm1": 8.5,
            "wind_speed": 6.7,
            "solar": 25,
            "co2": 475,
            "voc": 110
        },
        "meta": null,
        "status": "simulated",
        "board": "Libelium Smart Spot",
        "location": "Location not yet assigned"
    },
    {
        "node_id": "smartspot_8",
        "folder": "smartspot_8",
        "url": "smartspot_8/smartspot_data.php",
        "dashboard": "smartspot_8/smartspot_dashboard.html",
        "online": false,
        "file_age_s": null,
        "stale_threshold_s": 3600,
        "last_seen": null,
        "aqi": 51,
        "battery_pct": null,
        "sensors": {
            "no2_cal": 12.4,
            "o3_cal": 50.9,
            "co": 1.88,
            "laeq": 44.4,
            "temp": 28.6,
            "hum": 61.5,
            "pres": 1004.5,
            "pm25": 13,
            "pm10": 13.7,
            "pm1": 8.6,
            "wind_speed": 1.7,
            "solar": 657,
            "co2": 428,
            "voc": 106
        },
        "meta": null,
        "status": "simulated",
        "board": "Libelium Smart Spot",
        "location": "Location not yet assigned"
    },
    {
        "node_id": "smartspot_9",
        "folder": "smartspot_9",
        "url": "smartspot_9/smartspot_data.php",
        "dashboard": "smartspot_9/smartspot_dashboard.html",
        "online": false,
        "file_age_s": null,
        "stale_threshold_s": 3600,
        "last_seen": null,
        "aqi": 70,
        "battery_pct": null,
        "sensors": {
            "no2_cal": 15.2,
            "o3_cal": 35.9,
            "co": 1.03,
            "laeq": 60.7,
            "temp": 29.2,
            "hum": 56.2,
            "pres": 993.8,
            "pm25": 34.8,
            "pm10": 36.5,
            "pm1": 10.4,
            "wind_speed": 2.3,
            "solar": 545,
            "co2": 453,
            "voc": 198
        },
        "meta": null,
        "status": "simulated",
        "board": "Libelium Smart Spot",
        "location": "Location not yet assigned"
    },
    {
        "node_id": "smartspot_10",
        "folder": "smartspot_10",
        "url": "smartspot_10/smartspot_data.php",
        "dashboard": "smartspot_10/smartspot_dashboard.html",
        "online": false,
        "file_age_s": null,
        "stale_threshold_s": 3600,
        "last_seen": null,
        "aqi": 49,
        "battery_pct": null,
        "sensors": {
            "no2_cal": 18.9,
            "o3_cal": 14.6,
            "co": 1.61,
            "laeq": 54.7,
            "temp": 20,
            "hum": 52.6,
            "pres": 1003.4,
            "pm25": 24.4,
            "pm10": 18.4,
            "pm1": 10.4,
            "wind_speed": 1.3,
            "solar": 143,
            "co2": 483,
            "voc": 112
        },
        "meta": null,
        "status": "simulated",
        "board": "Libelium Smart Spot",
        "location": "Location not yet assigned"
    },
    {
        "node_id": "smartspot_11",
        "folder": "smartspot_11",
        "url": "smartspot_11/smartspot_data.php",
        "dashboard": "smartspot_11/smartspot_dashboard.html",
        "online": false,
        "file_age_s": null,
        "stale_threshold_s": 3600,
        "last_seen": null,
        "aqi": 50,
        "battery_pct": null,
        "sensors": {
            "no2_cal": 49.6,
            "o3_cal": 34.7,
            "co": 1.28,
            "laeq": 72.4,
            "temp": 18.2,
            "hum": 51.3,
            "pres": 1007.9,
            "pm25": 2.6,
            "pm10": 23,
            "pm1": 7.9,
            "wind_speed": 0.5,
            "solar": 799,
            "co2": 798,
            "voc": 27
        },
        "meta": null,
        "status": "simulated",
        "board": "Libelium Smart Spot",
        "location": "Location not yet assigned"
    }
]