Does anyone remember the 159 series said to have been used in MBH98?
Mann et al.  stated:
MBH98 calculated PCs of proxy sub-networks separately for each interval in their stepwise reconstruction. This is the only sensible approach, as it allows all data available over each sub-interval to be used. This requires 159 independent time series to represent all indicators required for reconstructions of all possible sub-intervals, even though the maximum number ever used for a particular sub-interval is 112.