reciprocal latice spacings for ice 
(hexagonal, a=b= 4.5212, c=7.3666 )
Sorted by resolution

  n    h   k   l     d()
   1   0   0   1    7.367
   2   1   0   0    3.915
   3   0   0   2    3.683
   4   1   0   1    3.457
   5   1   0   2    2.683
   6   0   0   3    2.456
   7   1   1   0    2.261
   8   1   1   1    2.161
   9   1   0   3    2.080
  10   2   0   0    1.958
  11   1   1   2    1.927
  12   2   0   1    1.892
  13   0   0   4    1.842
  14   2   0   2    1.729
  15   1   0   4    1.667
  16   1   1   3    1.663
  17   2   0   3    1.531
  18   2   1   0    1.480
  19   2   1   1    1.451
  20   1   1   4    1.428
  21   2   1   2    1.373
  22   2   0   4    1.341
  23   3   0   0    1.305
  24   3   0   1    1.285
  25   2   1   3    1.268
  26   3   0   2    1.230
  27   2   1   4    1.154
  28   3   0   3    1.152
  29   2   2   0    1.130
  30   2   2   1    1.117
  31   3   1   0    1.086
  32   2   2   2    1.081
  33   3   1   1    1.074
  34   3   0   4    1.065
  35   3   1   2    1.042
  36   2   2   3    1.027
  37   3   1   3    0.993
  38   2   2   4    0.963
  39   3   1   4    0.935
  40   3   2   0    0.898
  41   3   2   1    0.892
  42   3   2   2    0.873
  43   3   2   3    0.844
  44   3   2   4    0.807
  45   3   3   0    0.754
  46   3   3   1    0.750
  47   3   3   2    0.738
  48   3   3   3    0.720
  49   3   3   4    0.697