# Offline Storage

<table><thead><tr><th width="118">Number </th><th>Name</th><th>Description</th><th>Example</th></tr></thead><tbody><tr><td>1</td><td>Created_at:UTC</td><td><p>UTC timestamp of when the measurement was taken on the device. This is formulated when there is a GPRS connection.</p><p>In case there is GPRS failure to acquire time, a GSM-based time is used and is noted with “LT” local to the timezone</p></td><td><p>2024-4-25 0:1:57 UTC</p><p>2024-4-25 0:1:57 LT</p><p></p></td></tr><tr><td>2</td><td>RunTime</td><td>This is an internally generated count from the microcontroller timers, it overflows and resets at 3850</td><td></td></tr><tr><td>3</td><td>F/W Version</td><td>This is the current firmware version running on the device</td><td>10</td></tr><tr><td>4</td><td>DevName</td><td>Device name</td><td>AIRQO_G5XXX</td></tr><tr><td>5</td><td>PM1_X_ATM</td><td>PM1 particle count from PM-sensor X installed in the device</td><td><p>ATM represents particle count in (µg/m3) under the Atmospheric environment. </p><p>This count is what should be considered as the outdoor equivalent of particle concentrations.</p><p><br>“X” in “PM_X_ATM” can be 1 or 2 representing PM-sensor1 or PM-sensor2 installed in the device</p></td></tr><tr><td>6</td><td>PM2.5_X_ATM</td><td>PM2.5 particle count from PM-sensor X installed in the device</td><td></td></tr><tr><td>7</td><td>PM10_X_ATM</td><td>PM10 particle count from PM-sensor X installed in the device</td><td></td></tr><tr><td>8</td><td>PM1_X_CF1</td><td>PM1 particle count from PM-sensor X installed in the device</td><td></td></tr><tr><td>9</td><td>PM2.5_X_CF1</td><td>PM2.5 particle count from PM-sensor X installed in the device</td><td></td></tr><tr><td>10</td><td>PM10_X_CF1</td><td>PM10 particle count from PM-sensor X installed in the device</td><td></td></tr><tr><td>11</td><td>VBat</td><td>Device battery voltage measurement in (V) taken from raw ADC measurement</td><td></td></tr><tr><td>12</td><td>SignalQuality</td><td>GMS signal quality indicator that can be mapped to dBm. Refer to <a href="https://cdn-shop.adafruit.com/datasheets/sim800_series_at_command_manual_v1.01.pdf">sim800l at commands manual</a></td><td></td></tr><tr><td>13</td><td>Latitude</td><td>Latitude coordinate measurement from the GPS receiver in the device</td><td></td></tr><tr><td>14</td><td>Longitude</td><td>Longitude coordinate measurement from the GPS receiver in the device</td><td></td></tr><tr><td>15</td><td>Altitude</td><td>Altitude measurement in (m) above sea level from the GPS receiver</td><td></td></tr><tr><td>16</td><td>Velocity</td><td>Velocity measurement in (ms-1) from the GPS receiver</td><td></td></tr><tr><td>17</td><td>no.Sats</td><td>Number of satellites acquired by the GPS receiver</td><td></td></tr><tr><td>18</td><td>HDPD</td><td>Horizontal dilution of precision in 100th</td><td></td></tr><tr><td>19</td><td>Temp INT</td><td>Internal temperature measurement in (℃) taken from an internally placed temp/humidity sensor in the device</td><td></td></tr><tr><td>20</td><td>Humidity INT</td><td>Internal humidity measurement in (%) taken from internally placed temp/humidity sensor in the device</td><td></td></tr><tr><td>21</td><td>Temp EXT</td><td>External temperature measurement in (℃) taken from externally exposed temp/humidity sensor in the device</td><td></td></tr><tr><td>22</td><td>Humidity EXT</td><td>External humidity measurement in (%) taken from the external exposed temp/humidity sensor in the device</td><td></td></tr><tr><td>23</td><td>Pressure EXT</td><td>Atmospheric pressure reading in (hPA)</td><td></td></tr><tr><td>24</td><td>Altitude EXT</td><td>Altitude reading in (m) above sea level taken from BME280 MEMS sensor</td><td></td></tr><tr><td>25</td><td>Battery Voltage (V)</td><td>Battery voltage measurement in (V) taken from a dedicated battery monitoring chip</td><td></td></tr><tr><td>26</td><td>Battery Percentage (%)</td><td>Battery charge percentage in (%) taken from a dedicated battery monitoring chip</td><td></td></tr><tr><td>27</td><td>Charge/Discharge rate</td><td>Charge and discharge rate of battery derived from battery voltage changes</td><td></td></tr></tbody></table>