  We present the first statistical study of magnetic structures and associated
energy dissipation observed during a single period of turbulent magnetic
reconnection, by using the \textit{in-situ} measurements of the Magnetospheric
Multiscale mission in the Earth's magnetotail on July 26, 2017. The structures
are selected by identifying a bipolar signature in the magnetic field and
categorized as plasmoids or current sheets via an automated algorithm which
examines current density and plasma flow. The size of the plasmoids forms a
decaying exponential distribution ranging from sub-electron up to ion scales.
The presence of substantial number of current sheets is consistent with a
physical picture of dynamic production and merging of plasmoids during
turbulent reconnection. The magnetic structures are locations of significant
energy dissipation via electric field parallel to the local magnetic field,
while dissipation via perpendicular electric field dominates outside of the
structures. Significant energy also returns from particles to fields.
