Table 2.
The mean and median values of lengths, number of junctions, and abundances of four categories of ncRNAs
| ncRNA Database | Length, bp | No. junctions | Abundance, RPKM |
| RefSeq | 2,248, 1,832 | 4.52, 4 | 55.45, 3.03 |
| GENCODE | 1,012, 919 | 1.91, 1 | 10.83, 4.40 |
| HBM | 838, 832 | 1.72, 1 | 4.63, 2.27 |
| IDP, novel ncRNA | 2,402, 2,454 | 7.67, 7 | 17.97, 3.56 |