.  Figure (0): Error in formula (0) for $\eta(s)$ evaluated at $s=-0.0$ for $0\le N\le 000$.  Figure (0): Error in formula (0) for $\eta(s)$ evaluated at $s=-0.0$ for $0\le N\le 000$.  Figure (0): Error in formula (0) for $\eta(s)$ evaluated at $s=-0.0$ for $0\le N\le 000$.  Figure (0): Error in formula (0) for $\eta(s)$ evaluated at $s=-0.0$ for $0\le N\le 000$.  