Front positions, large autocorrelation treatment

This is a Mathematica list. It contains five elements, each of which corresponds to the front positions measured at a different threshold density, respectively: 45, 60, 75, 90 and 105 1/cm. Each element of this list contains six elements, each corresponding to a different experimental replicate invasion in the large autocorrelation length treatment. Each element of this sub-list contains pairs of data, where the first element is the measurement time (in days) and the second element is the position of the front at that time (in cm).