Table 2
Number of monomials of variables 
in 
(Eqs. (2), (24)) and of variables 
in 
(Eqs. (42), (44), (48)) according to the truncation degree.
| 2 | 4 | 6 | 8 | 10 | |
|---|---|---|---|---|---|
 |
|||||
| Monomials | 129 | 1345 | 6561 | 23 213 | 66 253 |
| Disk usage | 21 kB | 215 kB | 1.0 MB | 3.7 MB | 10.6 MB |
| Wall-clock time | 2.4 s (137%) | 2.5 s (129%) | 3.0 s (154%) | 5.7 s (187%) | 17.1 s (272%) |
 |
|||||
| Monomials | 8 | 6304 | 188 024 | 3 394 892 | 42 817 100 |
| Disk usage | – | 0.9 MB | 29.5 MB | 547.6 MB | 7.1 GB |
| Wall-clock time | – | 0.15 s (447%) | 3.4 s (773%) | 1 m 16 s (1038%) | 20 m 37 s (1343%) |
| Harmonics | 1 | 2748 | 69 339 | 1 029 137 | 10 279 581 |
Notes. It also shows the disk space in bytes occupied by the series, their computation time on an Intel(R) Xeon(R) CPU E5-2698 v3 at 2.30 GHz (CPU time in parentheses), and the number of Fourier harmonics in 
according toEq. (52).
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