Descriptions of WAM 0.5 degree irregular lat-long grid.

Number of points along a meridian is 361.
Number of points along a parallel varies.
  
Nr. of points     Parallel     Parallel's latitude 
             (North to South)     (in deg)

  0              1 to 18        90 to 81.5
114                19              81
120                20              80.5
126                21              80
132                22              79.5
138                23              79
144                24              78.5
150                25              78
156                26              77.5
162                27              77
168                28              76.5
174                29              76
180                30              75.5
186                31              75
192                32              74.5
198                33              74
204                34              73.5
212                35              73
218                36              72.5
222                37              72
228                38              71.5
234                39              71
240                40              70.5
246                41              70
252                42              69.5
258                43              69
264                44              68.5
270                45              68
276                46              67.5
282                47              67
288                48              66.5
294                49              66
300                50              65.5
304                51              65
310                52              64.5
316                53              64
322                54              63.5
328                55              63
332                56              62.5
338                57              62
344                58              61.5
350                59              61
356                60              60.5
360                61              60
366                62              59.5
372                63              59
376                64              58.5
382                65              58
388                66              57.5
392                67              57
398                68              56.5
404                69              56
408                70              55.5
414                71              55
418                72              54.5
424                73              54
428                74              53.5
434                75              53
438                76              52.5
444                77              52
448                78              51.5
454                79              51
458                80              50.5
464                81              50
468                82              49.5
472                83              49
478                84              48.5
482                85              48
486                86              47.5
492                87              47
496                88              46.5
500                89              46
506                90              45.5
510                91              45
514                92              44.5
518                93              44
522                94              43.5
528                95              43
532                96              42.5
536                97              42
540                98              41.5
544                99              41
548               100              40.5
552               101              40
556               102              39.5
560               103              39
564               104              38.5
568               105              38
572               106              37.5
576               107              37
580               108              36.5
582               109              36
586               110              35.5
590               111              35
594               112              34.5
598               113              34
600               114              33.5
604               115              33
608               116              32.5
612               117              32
614               118              31.5
618               119              31
620               120              30.5
624               121              30
628               122              29.5
630               123              29
634               124              28.5
636               125              28
640               126              27.5
642               127              27
644               128              26.5
648               129              26
650               130              25.5
654               131              25
656               132              24.5
658               133              24
660               134              23.5
664               135              23
666               136              22.5
668               137              22
670               138              21.5
672               139              21
674               140              20.5
678               141              20
680               142              19.5
682               143              19
684               144              18.5
686               145              18
688               146              17.5
690           147 to 148          17 to 16.5
692               149              16
694               150              15.5
696               151              15
698               152              14.5
700           153 to 15           14 to 13.5
702               155              13
704           156 to 157           12.5 to 12
706               158              11.5
708           159 to 160          11 to 10.5
710           161 to 162          10 to 9.5
712           163 to 164           9 to 8.5
714           165 to 166           8 to 7.5
716           167 to 169           7 to 6
718           170 to 173         5.5 to 4
720           174 to 188         3.5 to -3.5
718           189 to 192          -4 to -5.5
716           193 to 195          -6 to -7
714           196 to 197        -7.5 to -8
712           198 to 199        -8.5 to -9
710           200 to 201        -9.5 to -10
708           202 to 203       -10.5 to -11
706               204              -11.5
704           205 to 206         -12 to -12.5
702               207              -13
700           208 to 209       -13.5 to -14
698               210              -14.5
696               211              -15
694               212              -15.5
692               213              -16
690           214 to 215      -16.5 to -17
688               216              -17.5
686               217              -18
684               218              -18.5
682               219              -19
680               220              -19.5
678               221              -20
674               222              -20.5
672               223              -21
670               224              -21.5
668               225              -22
666               226              -22.5
664               227              -23
660               228              -23.5
658               229              -24
656               230              -24.5
654               231              -25
650               232              -25.5
648               233              -26
644               234              -26.5
642               235              -27
640               236              -27.5
636               237              -28
634               238              -28.5
630               239              -29
628               240              -29.5
624               241              -30
620               242              -30.5
618               243              -31
614               244              -31.5
612               245              -32
608               246              -32.5
604               247              -33
600               248              -33.5
598               249              -34
594               250              -34.5
590               251              -35
586               252              -35.5
582               253              -36
580               254              -36.5
576               255              -37
572               256              -37.5
568               257              -38
564               258              -38.5
560               259              -39
556               260              -39.5
552               261              -40
548               262              -40.5
544               263              -41
540               264              -41.5
536               265              -42
532               266              -42.5
528               267              -43
522               268              -43.5
518               269              -44
514               270              -44.5
510               271              -45
506               272              -45.5
500               273              -46
496               274              -46.5
492               275              -47
486               276              -47.5
482               277              -48
478               278              -48.5
472               279              -49
468               280              -49.5
464               281              -50
458               282              -50.5
454               283              -51
448               284              -51.5
444               285              -52
438               286              -52.5
434               287              -53
428               288              -53.5
424               289              -54
418               290              -54.5
414               291              -55
408               292              -55.5
404               293              -56
398               294              -56.5
392               295              -57
388               296              -57.5
382               297              -58
376               298              -58.5
372               299              -59
366               300              -59.5
360               301              -60
356               302              -60.5
350               303              -61
344               304              -61.5
338               305              -62
332               306              -62.5
328               307              -63
322               308              -63.5
316               309              -64
310               310              -64.5
304               311              -65
300               312              -65.5
294               313              -66
288               314              -66.5
282               315              -67
276               316              -67.5
270               317              -68
264               318              -68.5
258               319              -69
252               320              -69.5
246               321              -70
240               322              -70.5
234               323              -71
228               324              -71.5
222               325              -72
218               326              -72.5
212               327              -73
204               328              -73.5
198               329              -74
192               330              -74.5
186               331              -75
180               332              -75.5
174               333              -76
168               334              -76.5
162               335              -77
156               336              -77.5
150               337              -78
144               338              -78.5
138               339              -79
132               340              -79.5
126               341              -80
120               342              -80.5
114               343              -81
  0            344 to 361      -81.5 to -90