Fig. 2
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Representative examples of limb spicules exhibiting parabolic trajectories in the Hα - 0.8 Å space-time diagrams for the green slit shown in Fig. 1. The yellow curves indicate parabolic fits tracing the temporal evolution of the spicule apex, while the dashed red lines represent linear fits to the initial upward phase used to estimate the projected upward velocity (vproj).
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