Each reference structure is given by its ID (see Supplementary Material for dot-bracket notation). The following column gives the method of experimental support (NMR, NMR spectroscopy; X-ray, X-ray crystallography; SC, sequence comparison; MG, mutagenesis; SP, structure probing), length of the sequence and number of pseudoknots. For each reference structure, the corresponding RFAM family ID, average sequence length and average pairwise sequence identity is shown. The * symbol means that the method failed to run. The 'first' prediction for DotKnot-PW is the pairwise prediction with highest combined free energy and similarity score.