  For nine Mira-type stars (o Cet, R Leo, S Car, U Her, X Oph, R Aql, RR Aql, S
Ori, S Scl,) and one semi-regular star (L2 Pup), the mean light curves have
been obtained. The initial values of the brightness (observations) were fitted
by a trigonometric polynomial of the statistically optimal order. The Fourier
coefficients and the additional parameters (degree of the trigonometric
polynomial, amplitude of the brightness, the maximal slope of ascending and
descending branch, semi-amplitudes and initial epochs for the brightness
maximum (minimum magnitude) of each harmonic contribution, etc., were given in
the tables reported earlier (Kudashkina, 2015). In this study, we have received
several interesting correlations between these parameters in the bands H and K.
It was particularly noted the anomalous position on the figures of the star X
Oph. The mean light curves of the investigated stars are commonly symmetric in
the near infrared region (H and K).
