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The MultiGAS station at Poas produces continuous time series of volcanic gas concentrations and ratios. These data are managed by OVSICORI.

Gas Concentrations

Time series of H₂O, CO₂, and SO₂ concentrations measured in the volcanic plume near the active crater.

Gas Ratios

Derived ratios such as CO₂/SO₂ that help distinguish magmatic from hydrothermal gas sources and track changes in volcanic activity.