The data set consists of the figures in the manuscript tilted Topological Langmuir-cyclotron wave. There are 10 figures with captions. The captions are listed as follows. {Fig_1} \caption{\textbf{The dispersion relation $\omega_{n}(k_{z},k_{y})$ $(n=1,2,3,4)$ for (a) an over-dense plasma (b) an under-dense plasma. }Different values of $k_{y}$ are indicated by the color map.} {Fig_2} \caption{\textbf{Tilted phase space Dirac cone in the neighborhood of the LC Weyl point $(\omega_{\text{p}},k_{x},k_{y})=(\omega_{\text{pc}},0,0)$.}} {Fig_3} \caption{\textbf{Topological-Langmuir cyclotron wave as a spectral flow.} (a) Spectrum of $\hat{H}(x,-\mathrm{i}\eta\partial_{x},k_{y},k_{z})$ as a function of $k_{y}$. (b) The mode structure of the TLCW. The system parameters are $\left(\omega_{\text{p}1},\omega_{\text{p}2},\omega_{\text{pc}},k_{z}\right)=\left(0.8,0.45,0.76,0.9\right).$ } {Fig_4} \caption{\textbf{TLCWs at two boundaries.} (a) Spectrum of $\hat{H}(x,-\mathrm{i}\eta\partial_{x},k_{y},k_{z})$ as a function of $k_{y}$. (b) The mode structure of the right TLCW. (c) The mode structure of the left TLCW. The system parameters are $\left(\omega_{\text{p}1},\omega_{\text{p}2},\omega_{\text{pc}},k_{z}\right)=\left(0.8,0.45,0.76,0.9\right).$ } {Fig_5}\caption{\textbf{(a) 2D and (b) 3D simulations of the TLCW excited on a zig-zag boundary.} The system parameters are $\left(\omega_{\text{p}1},\omega_{\text{p}2},\omega_{\text{pc}}\right)=\left(0.8,0.3,0.54\right).$ } {Fig_6}\caption{\textbf{(a) 2D and (b) 3D simulations of the TLCW excited on an oval boundary.} The system parameters are $\left(\omega_{\text{p}1},\omega_{\text{p}2},\omega_{\text{pc}}\right)=\left(0.8,0.3,0.54\right).$ The TLCW propagates clockwise and carries an angular momentum.} {Fig_7} \caption{\textbf{Topological charge of waves in continuous media.} Around an isolated Weyl point, all closed surfaces surrounding the Weyl point support isomorphic eigenmode bundles and have the same first Chern number, which can be viewed as the topological charge associated with this isolated Weyl point in phase space for the isomorphic eigenmode bundles.} {Fig_8} \caption{\textbf{Illustration of possible spectral flows of $\hat{H}(x,-\mathrm{i}\eta\partial_{x},k_{y},k_{z})$ in the common gap $[g_{1}+\lambda,g_{2}-\lambda]$. }Theorem \ref{thm:SpectralFlow} stipulates the ``traffic rules'' for the flow of the spectrum. The index for red dispersion curves is $1$, and the index for blue dispersion curves is $-1.$} {Fig_9} \caption{\textbf{The tilted phase space Dirac cone of $H_{2}(x,k_{x},k_{y},k_{z})$ at the LC Weyl point.} It faithfully represents the tilted Dirac cone of $H(x,k_{x},k_{y},k_{z})$ shown in Fig.\,2.} {Fig_10} \caption{\textbf{Analytical solutions of the tilted Dirac cone.} (a) Analytical spectrum of $\hat{H}_{2}''(x,-\mathrm{i}\partial_{x},\lambda)$ as a function of $k_{y}$. (b) Analytical mode structure of the eigenmodes. The result of the TLCW (labeled by $n=-1$) agrees well with the numerical solution shown in Fig.\,3.}