/vobs/helio.20170417/idl/modelling/base_event_struct.pro
/vobs/helio.20170417/idl/modelling/hio_propagation_delays.pro
/vobs/helio.20170417/idl/modelling/propagation_code.pro
/vobs/helio.20170417/idl/modelling/propagation_struct.pro