Table 1.

Classification of gene expression level based on replicate averaged RPKMs.

Description of expression level	RPKM range	% of ORFs	Number of ORFs
Very high	>15,000	0.23	11
High	1,500–15,000	2.49	120
Moderate	500–1,500	5.30	255
Modest	250–500	8.61	414
Low	50–250	40.41	1,944
Very low	15–50	23.70	1,140
Not expressed	<15	19.27	927