Data type: numb
Related item: '_reflns_number_gt'
Related function: replace
Enumeration range: 0 -> infinity
The number of 'observed' reflections, in the _refln_ list (not the _diffrn_refln_ list). The observed reflections satisfy the threshold criterion specified by _reflns_threshold_expression (or the deprecated _reflns_observed_criterion). They may include Friedel equivalent reflections according to the nature of the structure and the procedures used. The special characteristics of the reflections included in the _refln_ list should be given in the item _reflns_special_details.