Table 2: Rough values of the growing time, wavelength, and phase velocity. The characters "A'' and "C'' represent the absolute instability and convective instability, respectively.
R u₀ Type $t_i \omega_{\rm p}$ $\lambda/l_{\rm p}$ $v_{\rm ph}$

RUN1 1.0 A 5 6 -2.8

RUN3 0.3 C 10 0.9 -1.1

RUN4 1.0 A 5 8-10 -2.8

RUN5 0.3 C 10-30 1 -1.1

**Table 2:** Rough values of the growing time, wavelength, and phase velocity. The characters "A'' and "C'' represent the absolute instability and convective instability, respectively.
	R u₀	Type	$t_i \omega_{\rm p}$	$\lambda/l_{\rm p}$	$v_{\rm ph}$
RUN1	1.0	A	5	6	-2.8
RUN3	0.3	C	10	0.9	-1.1
RUN4	1.0	A	5	8-10	-2.8
RUN5	0.3	C	10-30	1	-1.1

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