Measurement of the energy conversion and growth rate. (a) Three components of the magnetic field; (b) instantaneous energy conversion rate ﹩\delta {{\boldsymbol{J}}}_{{\boldsymbol{c}}}{\rm{\cdot }}\delta {\boldsymbol{E}}﹩ (black), low-pass filtered ﹩{\left\langle \delta {{\boldsymbol{J}}}_{c}{\rm{\cdot }}\delta {\boldsymbol{E}}\right\rangle }_{{\rm{lf}}}﹩ (blue) and ﹩{\left\langle \delta {{\boldsymbol{J}}}_{c}{\rm{\cdot }}\delta {\boldsymbol{E}}\right\rangle }_{\mathrm{int}}﹩ (red) obtained by inverse continuous wavelet transform from the spectrum of the net energy conversion rate; (c) the same format as panel (b) except using the ﹩{{\boldsymbol{J}}}_{p}﹩ as the current density; (d) the energy conversion calculated using two different current densities, which are obtained by inverse continuous wavelet transform from the spectrum of the net energy conversion rate, where the shaded areas represent their errors; (e) spectra of ﹩\left\langle \delta {{\boldsymbol{J}}}_{c}{\rm{\cdot }}\delta {\boldsymbol{E}}\right\rangle ﹩, (f) ﹩\left\langle \delta {{\boldsymbol{J}}}_{p}{\rm{\cdot }}\delta {\boldsymbol{E}}\right\rangle ﹩, and (g) ﹩\left\langle \delta {{\boldsymbol{J}}}_{e}{\rm{\cdot }}\delta {\boldsymbol{E}}\right\rangle ﹩; (h) spectrum of the growth rate γ.