| Local time (Hour) | Trend slope α per year | ||
| δfoF2_vquiet | δfoF2_quiet | δfoF2_all | |
| 1200 | −0.0027 | −0.0019 | −0.0013 |
| 1300 | −0.0043 | −0.0033 | −0.0025 |
| 1400 | −0.0046 | −0.004 | −0.0032 |
| 1500 | −0.0043 | −0.0039 | −0.0031 |
| 1600 | −0.0042 | −0.0034 | −0.0027 |
| 1700 | −0.0034 | −0.0027 | −0.002 |