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Rotation range and crystal class

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The completeness of data is mostly influenced by the selection of the total range of rotation appropriate for the crystal symmetry. Below in the table the rotation range (°) required to collect a complete data set in different crystal classes is shown. The direction of the spindle axis is given in parentheses; ac means any vector in the ac plane.

 Point group     Native data Anomalous data
 1
180 (any)180 + 2θmax (any)
 2180 (b); 90 (ac180 (b); 180 + 2θmax (ac)
22290 (ab or ac or bc 90 (ab or ac or bc)
 4        90 (c or ab90 (c); 90 + θmax (ab
 42245 (c); 90 (ab45 (c); 90 (ab
 360 (c); 90 (ab60 + 2θmax (c); 90 + θmax (ab
 3230 (c); 90 (ab30 + θmax (c); 90 (ab
 660 (c); 90 (ab60 (c); 90 + θmax (ab
 62230 (c); 90 (ab30 (c); 90 (ab
 23~60 ~70 
 432~35 ~45