Antenna 25 is misbehaving badly at L-band.
IFs A and C are low by a factor of 8. IF B low by a factor of 50,
and IF D by a factor of 15.
Also, antenna 5, IF 'C' is still behaving badly, by being in two
different amplitude states. It stays in each for longish periods of
time (hours, even). But, 5B is now working properly.