file	normalization factor	total signal
ERR3138981.bedGraph	0.022448	44546574766
ERR3138982.bedGraph	0.022088	45273331561
ERR3138976.bedGraph	0.021052	47502326034
ERR3138979.bedGraph	0.020924	47791558286
ERR3138978.bedGraph	0.020921	47799116863
ERR3138980.bedGraph	0.022425	44593351496
ERR3138983.bedGraph	0.022046	45360494720
ERR3138977.bedGraph	0.021392	46745690974