This dataset contains data from the experiment conducted at UiT The Arctic University of Norway in Narvik, from March to May 2023. One file contains optical power measurements from the experiment while the second file contains weather data obtained from the Narvik Centre meteorological station (ID SN84701) operated by The Norwegian Meteorological Institute. More details about this work can be found in the paper at: https://doi.org/10.1109/ACCESS.2024.3493815