mytb = casac.table()
fringefit('s8.ms', 'sb.t', combine='', refant='LA', zerorates=True, parang=True, gaintable=[], maxits=10)
fringefit('s8.ms', 'mb-sb.t', combine='spw', refant='LA', zerorates=False, parang=True, gaintable='sb.t', maxits=10)
flagdata('s8.ms', mode='manual', antenna='1', correlation='RR')
fringefit('s8.ms', 'flag_mb.t', combine='spw', refant='LA',  zerorates=False, parang=True, gaintable=[], maxits=10)
fringefit('s8.ms', 'flag_sb.t', combine='', refant='LA', zerorates=True, parang=True,gaintable=[], maxits=10)
fringefit('s8.ms', 'flag_mb-flag_sb.t', combine='spw', refant='LA',  zerorates=False, parang=True, gaintable='flag_sb.t', maxits=10)

mytb.open('mb-sb.t')
print('sb and mb before flagging is OK:')
print mytb.getcell('FPARAM',1)
print('')
mytb.close()

mytb.open('flag_mb.t')
print('Just mb after flagging is OK:')
print mytb.getcell('FPARAM',1)
print('')
mytb.close()

mytb.open('flag_mb-flag_sb.t')
print('sb and mb after flagging is not OK:')
print mytb.getcell('FPARAM',1)
mytb.close()