Long-term in situ (O)VOC measurements at the Maïdo Observatory (Reunion Island)

The dataset contains (O)VOC concentration data that were acquired with a hs-PTR-MS instrument at the Maido observatory at Reunion Island. It was acquired in the framework of the [OCTAVE project](https://octave.aeronomie.be/).

A two-year dataset of volatile organic compound concentrations has been recorded with a high-sensitivity Proton Transfer Reaction Mass Spectrometer (hs-PTR-MS, Ionicon Analytik GmbH, Austria)
at the Maïdo Observatory (21.4°S, 55.1°E, 2160 m a.s.l.)
The hs-PTR-MS instrument was run in multiple ion detection mode using H3O+ source ions and a dwell time of 10 s for every VOC-related product ion, resulting in a total cycle time of ~2.7 minutes.

Details on instrument calibration can be found in Verreyken et al. Atm. Chem. Phys., 20, 14821-
14845, 2020 (https://doi.org/10.5194/acp-20-14821-2020).