.
..
hmi.S_720s.20161116_202400_TAI.3.I1.fits
hmi.S_720s.20161116_202400_TAI.3.Q1.fits
hmi.S_720s.20161116_202400_TAI.3.U1.fits
hmi.S_720s.20161116_202400_TAI.3.V1.fits