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Scattering polarization in the Sr I 4607.3 \AA \ line observed with highresolution is an important diagnostic of the Sun's atmosphere and magnetism atsmall spatial scales. At present, spatially resolved observations of thisdiagnostic are rare and have not been reported as close to the disk center asfor $\mu=0.6$. Our aim is to measure the scattering polarization in the Sr Iline at $\mu=0.6$ and to identify the spatial fluctuations with a statisticalapproach. Using the Fast Solar Polarimeter (FSP) mounted on the TESOSfiltergraph at the German Vacuum Tower Telescope (VTT) in Tenerife, Spain, wemeasured both the spatially resolved full Stokes parameters of the Sr I line at$\mu=0.6$ and the center-to-limb variation of the spatially averaged Stokesparameters.  We find that the center-to-limb variation of the scattering polarization inthe Sr I line measured with FSP is consistent with previous measurements. Astatistical analysis of Stokes $Q/I$ (i.e., the linear polarization componentparallel to the solar limb), sampled with $0.16$" pixel$^{-1}$ in the line coreof Sr I reveals that the signal strength is inversely correlated with theintensity in the continuum. We find stronger linear polarimetric signalscorresponding to dark areas (intergranular lanes) in the Stokes $I$ continuumimage. In contrast, independent measurements at $\mu=0.3$ show a positivecorrelation of $Q/I$ with respect to the continuum intensity. We estimate thatthe patch diameter responsible for the excess $Q/I$ signal is on the order of$0.5$"-$1$". The presented observations and the statistical analysis of $Q$/$I$signals at $\mu=0.6$ complement reported scattering polarization observationsas well as simulations.

Detection of spatially structured scattering polarization of Sr I $4607.3$ \AA \ with the Fast Solar Polarimeter