| $10^3$ | $4$ | $-0.012459303385353 + 0.020469089205557$i | $ 9.5575\times 10^{-6}$ |
| $8$ | $-0.012451205919241 + 0.020474396104675$i | $ 1.6932\times 10^{-7}$ |
| $16$ | $-0.012451244769401 + 0.020474243043113$i | $1.1403\times 10^{-8}$ |
| $I_1[f]$ | $-0.012451247517459 + 0.020474231975995$i | |
| $10^4$ | $4$ | $0.000616477977126 + 0.007687006555462$i | $ 5.9071\times 10^{-6}$ |
| $8$ | $0.000619168389738 + 0.007681855738321$i | $ 2.2109\times 10^{-7}$ |
| $16$ | $0.000619041935736 + 0.007681688151854$i | $1.1399\times 10^{-8}$ |
| $I_1[f]$ | $0.000619033274177 + 0.007681680740797$i | |