Milankovitch.dat: output file from Pacing_glacial_cycles/Insolation_forcing/insolation-eli-4pacing.f, using the solution of Berger 1978, contains: time in years (zero being present-day), latitude, insolation in W/m^2, eccentricity, precession, longitude, obliquity

observations_specmap.dat: A proxy estimate of ice volume as a function of time before present in kyr