# assert(16);
alias mars.fcmonth = marsForecastMonth;
alias mars.number  = perturbationNumber;
alias mars.origin  = centre;
alias mars.method  = methodNumber;

unalias mars.step;

if (class is "od" || class is "me" || class is "en" || class is "c3" || class is "ci") {
    alias mars.system = systemNumber;
}

# See ECC-624
if (centre == 80 && subCentre == 98 && (class is "c3" || class is "ci")) {
  constant cnmc_cmcc = 'cmcc';
  alias mars.origin = cnmc_cmcc;
}

if (class is "ci") { unalias mars.method; }