Dataset for "Viscosity of Trachytic Melt Constrained by Integrated Rheological and In Situ Spectroscopic Analyses: Insights From the Agnano‐Monte Spina Eruption (Campi Flegrei, Italy)"Journal of Geophysical Research: Solid Earth, 131, e2026JB033754

The data used in the manuscript titled "Viscosity of Trachytic Melt Constrained by Integrated Rheological and In Situ Spectroscopic Analyses: Insights From the Agnano‐Monte Spina Eruption (Campi Flegrei, Italy)" and the viscosity calculator. Abeykoon, S., Calabrò, L., Di Genova, D., Kurnosov, A., Bamber, E. C., Bondar, D., et al. (2026). Viscosity of trachytic melt constrained by integrated rheological and in situ spectroscopic analyses: Insights from the Agnano‐Monte Spina eruption (Campi Flegrei, Italy). Journal of Geophysical Research: Solid Earth, 131, e2026JB033754. https://doi.org/10.1029/2026JB033754