Table 1.

Number of regions, median length and overdispersion estimate for each of the considered region types

Region type	Number of regions	Median region length (bps)	Overdispersion estimate*
Protein-coding genes	19 256	1302	0.332 [0.323; 0.341]
Promoter elements	19 157	848	0.460 [0.449; 0.472]
Splice sites	17 867	32	0.485 [0.357; 0.657]
3′ UTRs	18 481	1022	0.260 [0.251; 0.270]
5′ UTRs	18 220	260	0.518 [0.496; 0.542]
Randomly sampled regions	10 000	1300	0.266 [0.255; 0.277]

Note: Besides the five region types defined in Juul et al. (2017), we also estimate the magnitude of overdispersion for 10 000 randomly sampled regions, each of size 1300 bps.

^*95% confidence limits in brackets.