Table 2. Gene content in the four prevalent chromatin states of H1hesc and K562 cell lines.

Chromatin states	EC1	EC2	EC3	EC4	C1	C2	C3	C4
promoter count	7653	5047	1138	1505	9588	3089	2334	827
promoter density per Mb	13.127	9.278	1.497	2.16	15.861	7.812	2.953	1.133
mean gene expression (RPKM)	30.537	7.76	0.798	1.299	18.529	2.307	0.696	0.244
median gene expression (RPKM)	8.527	0.988	0.008	0.025	5.58	0.29	0.005	0
mean gene length (kb)	50.999	72.705	56.335	67.538	43.557	58.535	86.301	173.962

For each chromatin state the following information is given: (i) the total number of promoters per chromatin state, (ii) the density of promoters per Mb, (iii) the mean level of expression per chromatin state in RPKM (Materials and Methods), (iv) the median level of expression per chromatin state in RPKM, (v) the mean gene length per chromatin state in kb.