int grib_rg_400[] = {
        18,   25,   32,   40,   45,
        50,   60,   60,   72,   72,
        75,   81,   90,   96,  100,
       108,  120,  120,  125,  128,
       144,  144,  150,  160,  160,
       180,  180,  192,  192,  200,
       200,  216,  216,  225,  240,
       240,  240,  250,  250,  256,
       270,  288,  288,  288,  300,
       300,  320,  320,  320,  324,
       360,  360,  360,  360,  360,
       360,  375,  375,  384,  400,
       400,  400,  405,  432,  432,
       432,  432,  450,  450,  450,
       480,  480,  480,  480,  480,
       486,  500,  500,  512,  512,
       540,  540,  540,  540,  540,
       576,  576,  576,  576,  576,
       576,  600,  600,  600,  600,
       640,  640,  640,  640,  640,
       640,  640,  648,  675,  675,
       675,  675,  675,  720,  720,
       720,  720,  720,  720,  720,
       729,  729,  750,  750,  750,
       750,  768,  768,  768,  800,
       800,  800,  800,  800,  800,
       810,  864,  864,  864,  864,
       864,  864,  864,  864,  864,
       864,  900,  900,  900,  900,
       900,  900,  900,  960,  960,
       960,  960,  960,  960,  960,
       960,  960,  960,  960,  960,
       972,  972, 1000, 1000, 1000,
      1000, 1000, 1000, 1024, 1024,
      1024, 1024, 1024, 1080, 1080,
      1080, 1080, 1080, 1080, 1080,
      1080, 1080, 1080, 1080, 1125,
      1125, 1125, 1125, 1125, 1125,
      1125, 1125, 1125, 1152, 1152,
      1152, 1152, 1152, 1152, 1200,
      1200, 1200, 1200, 1200, 1200,
      1200, 1200, 1200, 1200, 1200,
      1215, 1215, 1215, 1215, 1280,
      1280, 1280, 1280, 1280, 1280,
      1280, 1280, 1280, 1280, 1280,
      1280, 1280, 1280, 1280, 1280,
      1296, 1296, 1296, 1296, 1350,
      1350, 1350, 1350, 1350, 1350,
      1350, 1350, 1350, 1350, 1350,
      1350, 1350, 1350, 1350, 1440,
      1440, 1440, 1440, 1440, 1440,
      1440, 1440, 1440, 1440, 1440,
      1440, 1440, 1440, 1440, 1440,
      1440, 1440, 1440, 1440, 1440,
      1440, 1440, 1440, 1440, 1440,
      1440, 1440, 1458, 1458, 1458,
      1458, 1458, 1458, 1458, 1500,
      1500, 1500, 1500, 1500, 1500,
      1500, 1500, 1500, 1500, 1500,
      1500, 1500, 1500, 1500, 1500,
      1500, 1536, 1536, 1536, 1536,
      1536, 1536, 1536, 1536, 1536,
      1536, 1536, 1536, 1536, 1536,
      1536, 1536, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600,
      1600, 1600, 1600, 1600, 1600 };