def _cdp_split_single_times_read_aligns(split_alignment_dict, pos):
    """
    Dict. of times a read aligns to all references
    {read: times aligned} 
    """
    srna_align_counts = {}
    for aligned_sRNAs in list(split_alignment_dict.values())[pos]:
        for aligned_sRNA, count in aligned_sRNAs.items():
            if aligned_sRNA in srna_align_counts:
                srna_align_counts[aligned_sRNA][pos] += count
            else:
                srna_align_counts[aligned_sRNA][pos] = count
    return srna_align_counts
