Subset of measurements of trench assisted 8 core multi-core fiber under different signalling and measurement conditions such as: modulation format, baud rate, PRBS, wavelength, temperature, averaging time.Measurement taken and analysed in "Experimental Analysis on Variations and Accuracy of Crosstalk in Trench-Assisted Multi-core Fibers" by H. Yuan et al.The measurements have been extensively analysed and are at the base of the conclusion presented in "Random Walk for modelling Multi Core Fiber cross-talk and step distribution characterisation" by A. Ottino et al.The measurements are available as Matlab .mat files.