Secondary structure wobble. (A) Relationship between 'wobble total' and 'wobble single'. There are about 37.5% ((1.5956 - 1)/1.5956) wobble sites only exist in the structures which not including the two structures related to 'Wobble Single'. (B) The relationship between resolution and secondary structure wobble. Green diamonds represent the base-10 logs of the numbers of the wobble site pairs. The blue dots indicate the ratio of coil sites in wobble sites under certain resolution bins of size 0.1 Å, and the red dots indicate the selected blue dots with > 10,000 wobble sites.