imarith bias01.imh  -   985.1  bias01.imh  pix=r
imarith bias02.imh  -   985.1  bias02.imh  pix=r
imarith bias03.imh  -   985.3  bias03.imh  pix=r
imarith bias04.imh  -   985.1  bias04.imh  pix=r
imarith bias05.imh  -   985.5  bias05.imh  pix=r
imarith bias06.imh  -    985.  bias06.imh  pix=r
imarith bias07.imh  -   984.8  bias07.imh  pix=r
imarith bias08.imh  -   984.9  bias08.imh  pix=r
imarith bias09.imh  -    985.  bias09.imh  pix=r
imarith bias10.imh  -   985.2  bias10.imh  pix=r
imarith bias11.imh  -   986.3  bias11.imh  pix=r
imarith bias12.imh  -   986.5  bias12.imh  pix=r
imarith bias13.imh  -   986.7  bias13.imh  pix=r
imarith bias14.imh  -   986.3  bias14.imh  pix=r
imarith bias15.imh  -   986.3  bias15.imh  pix=r
imarith bias16.imh  -    986.  bias16.imh  pix=r
imarith bias17.imh  -   986.2  bias17.imh  pix=r
imarith bias18.imh  -   985.8  bias18.imh  pix=r
imarith bias19.imh  -    986.  bias19.imh  pix=r
imarith bias20.imh  -   986.2  bias20.imh  pix=r