See summary of corresponding experiment. This dataset contains 12H values from 01-Jan-1860 to 30-DEC-2050. Model year 0 corresponds to real time year 1860. Years in the GRIB header are being counted from 0-99 [1860-1959] , 0-55 [1960-2015] , 0-34 [2016-2050]. The following month is missing (irrecoverable): model-year 42 month 12 (first block).