IRI-90 provides monthly mean values for magnetically quiet conditions at non-auroral latitudes in the altitude range 50km to 2000km. However, IRI90 is often used as an initialization for conditions at ...

We dropped support for 1.19 in 2021. The only thing I could suggest would be to run in a container with whatever operating system, BLAS libraries (MKL?), compilers, and emulated hardware you used when ...