  The results of measurements in two series, each series of 4 Runs and about 50
days each Run, are presented. A multi-cathode counter with an iron cathode is
used in these measurements. In both series we have observed some excess in
count rates in sidereal time while no excess has been observed in terrestrial
time. In the first series from 27.12.22 to 24.07.23 we have observed the excess
in the period between 8 a.m. and 12 a.m. of sidereal time with a confidence
level more than 6 \sigma, in the second series from 21.09.23 to 03.04.24 in the
period between 6 p.m. and 10 p.m. of sidereal time with a confidence level more
than 4 \sigma. The fact that in terrestrial time we do not observe a similar
effect as in sidereal time suggests that probably this effect is of galactic
origin and that this may be caused by dark photons. Future steps are suggested
to validate these results.
