MiCS-5524 carbon monoxide sensor data acquisition

This dataset contains long-term outdoor measurements acquired in Oran, Algeria, starting in January 2024, using a MiCS-5524 gas sensor configured for carbon monoxide monitoring. The gas-sensor response is provided as raw 10-bit ADC counts rather than calibrated ppm concentrations. Temperature in °C and relative humidity in % are also included. The first column contains the internet-based date and time of each acquisition, and the second column contains the MAC address of the ESP-01 Wi-Fi module used to transmit UDP packets to a router and then to Google Sheets. The acquisition system was initially based on a STM32F103C8 “Blue Pill” board. Later, the microcontroller was replaced by an ultra-low-power STM32L073CZfor improved long-term operation, keeping the same PCB.