Column Assignments used in SigmaPlot Program
Columns 1–4, Rows 1-N (# of neurons in data set) Each neuron’s # corresponds to the row# it is located in	Neuron information: date, neuron channel#, location & etc.
Columns 5,18, & 28	Low # rows used for intermediate calculations
Columns 6–13, rows 1–49	Contains sorted neuron#s assigned to each of the 7 clusters and col#13 is for neurons that don’t fit well with any of the clusters
Columns 6–13, rows 50–55	Cluster summary results for each of the 7 clusters: mean (vector distance of neurons in the cluster), SD, minimum, maximum, mean+2SDs, and number of neurons in cluster.
Columns 16 and 17 (N rows)	Minimum vector distance of neuron vector to one of the centroids determines the cluster# it is assigned to (col. 17)
Col 18, Row 1	Overall average minimum error of each iteration
Columns 20–26, 10 rows	Initial cluster vectors (n=7), or after 1st iteration, 7 vector centroids used for distance calculations
Column 27, rows 1–10	Plotting index 1–10
Column 29, rows 1–7	Number of neurons in each cluster
Columns 30–36, rows 1–10	Updated centroids following iteration
Columns 37 & 38	Intermediate calculations for determining weighting factors
Columns 40-(40+135=175), rows 1–10 N=135 neurons in this study	Neuron contour vectors.
Columns 180 −330	After final iteration, for each cluster, assigned neuron vectors are placed in adjacent columns to facilitate plotting. An empty column separates each cluster data.