Table 2  Number of e-value smaller than a threshold are given for exact computations (exact) and asymptotic Karlin's approximations (Karlin). The last row gives the accuracy of asymptotic predictions (accuracy = Karlin/exact).
e-value  10-1  10-2  10-3  10-4  10-5  10-6
exact  9473  7772  6271  4563  3232  2348
Karlin  3417  2047  1056  439  195  96
accuracy  34%  26%  17%  10%  6%  4%