A constrained least squares algorithm was used to fit a slope and intercept to the relationship between mean spike rate and spike rate variance for each neuron in each area.

Column values indicate the median fits, with the 25th and 75th percentiles in parentheses. The intercepts were constrained to be greater than zero (hence the lower quantile being approximately zero for each area).

列值代表拟合中位数，括号内标注25%与75%分位数。截距项被约束为大于零，因此每个区域的低分位数近似为零。