Long-period Magnetotelluric time series recorded at site SH39 near Anglesey, Wales, UK (NERC Grant NE/V002694/1)

Long-period Magnetotelluric time series recorded in Jan to Feb 2022 at site NT91 near Alnham, England, UK (NT91). Funded by NERC, grant number: NE/V002694/1 "SWIMMR Activities in Ground Effects (SAGE)". These data consist of measurements of the Earth’s natural magnetic and electric field variations.