interpolation error near the ground ( procx,procy>1 and east/.../north_add_in>1 ) – in #10: INT2LM

in #10: INT2LM

Thank you for the checking and finding the je_in_tot -error.

  @rolfzentek in #67ce79a

Thank you for the checking and finding the je_in_tot -error.

Thank you for the checking and finding the je_in_tot -error.