M is the black hole mass in ;
,
and
are the disk and the spot characteristic radii in
(radius
of the spot orbit follows from
Eq. (11), while
includes correction on finite size of spots);
luminosity
is in units of 1044 erg s-1 cm-2; time intervals
,
are
in seconds; variances
are in percent;
(
follows from Eq. (23),
includes
the effect of the spot finite size and
was obtained numerically at 1 keV with
relativistic corrections and finite size of the spots taken into account).
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