Integrated VIMOS-IFU spectrum of the Leo A H II region normalised by the flux at the peak of the Hβ line. Left panel: spectral window showing Hγ and [O III]λ4363 detection, from left to right, respectively. Middle panel: spectral window presenting the Hβ, and the [O III]λλ 4959,5007 detection, from left to right, respectively. Right panel: spatial distribution of fibres selected to generate the integrated spectrum of the Leo H II region with [O III]λ4363 detection. The colour code represents the jump value of each selected fibre. The grey contours represent the Hβ emission of the nebula as a reference.