Table 6.
Dates of simultaneous Jicamarca Digisonde and CHAMP neutral gas density observations for the period of solar minimum. Observed and reduced to the heights hred neutral gas densities (10−15 g cm−3) are shown in comparison with the calculated and empirical models’ values. Calculated with the stationary scheme ρ values are corrected for the [He] contribution (see text). Daily F10.7 and Ap indices are given. LT = UT-5.
| Date | UT | h red, km | ρ obs | ρ cal | ρ JBmod | ρ MSISE | F 10.7 | Ap |
|---|---|---|---|---|---|---|---|---|
| Jan. 06, 2007 | 1900 | 360 | 3.05 | 3.31 | 3.64 | 4.62 | 87.3 | 5 |
| Jan. 09, 2007 | 1830 | 360 | 2.95 | 3.28 | 3.53 | 4.27 | 92.2 | 4 |
| Jan. 12, 2007 | 1800 | 350 | 3.67 | 3.24 | 4.07 | 4.68 | 83.8 | 3 |
| Jan. 15, 2007 | 1800 | 350 | 5.60 | 5.65 | 5.16 | 5.37 | 82.0 | 16 |
| Jan. 21, 2007 | 1730 | 350 | 3.40 | 3.52 | 4.14 | 4.50 | 78.6 | 8 |
| Jan. 30, 2007 | 1630 | 350 | 4.39 | 4.32 | 4.78 | 5.08 | 87.5 | 24 |
| Feb. 05, 2007 | 1600 | 350 | 2.90 | 3.15 | 3.43 | 3.85 | 83.0 | 6 |
| May 06, 2007 | 2000 | 350 | 2.41 | 2.92 | 3.40 | 4.32 | 78.1 | 1 |
| May 09, 2007 | 1930 | 350 | 2.99 | 3.69 | 3.92 | 4.29 | 72.1 | 5 |
| May 10, 2007 | 1915 | 350 | 2.33 | 2.54 | 3.44 | 4.09 | 71.2 | 3 |
| May 12, 2007 | 1915 | 350 | 2.28 | 2.99 | 3.35 | 3.79 | 71.4 | 2 |
| May 13, 2007 | 1900 | 350 | 2.55 | 2.81 | 3.37 | 3.70 | 73.5 | 2 |
| May 19, 2007 | 1830 | 350 | 3.26 | 4.23 | 4.34 | 4.32 | 74.8 | 12 |
| May 25, 2007 | 1800 | 350 | 3.33 | 2.95 | 4.25 | 4.02 | 68.1 | 14 |
| May 28, 2007 | 1745 | 350 | 2.25 | 2.06 | 2.97 | 3.03 | 68.7 | 4 |
| May 31, 2007 | 1730 | 350 | 2.23 | 2.65 | 2.77 | 2.94 | 74.6 | 3 |
| Sep. 10, 2007 | 2000 | 350 | 2.92 | 2.62 | 2.75 | 3.43 | 66.9 | 2 |
| Sep. 12, 2007 | 2000 | 350 | 2.88 | 2.87 | 2.79 | 3.38 | 65.9 | 2 |
| Sep. 16, 2007 | 1915 | 350 | 2.34 | 2.92 | 2.99 | 3.63 | 67.0 | 2 |
| Sep. 22, 2007 | 1845 | 350 | 3.24 | 3.69 | 3.82 | 4.25 | 66.7 | 12 |
| Sep. 23, 2007 | 1900 | 350 | 3.50 | 3.08 | 3.74 | 4.11 | 66.3 | 16 |
| Jan. 24, 2008 | 1930 | 340 | 3.05 | 3.11 | 4.66 | 5.28 | 71.3 | 5 |
| Jan. 27, 2008 | 1900 | 340 | 3.45 | 4.03 | 3.97 | 5.14 | 72.0 | 4 |
| Jun. 01, 2008 | 1930 | 330 | 3.47 | 3.53 | 4.65 | 5.10 | 66.6 | 7 |
| Jun. 08, 2008 | 1845 | 330 | 3.53 | 3.60 | 4.77 | 4.51 | 64.9 | 7 |
| Jun. 12, 2008 | 1830 | 330 | 2.37 | 2.41 | 3.75 | 4.03 | 67.1 | 3 |
| Jun. 15, 2008 | 1800 | 330 | 4.34 | 4.66 | 5.02 | 4.50 | 66.5 | 17 |
| Jun. 16, 2008 | 1800 | 330 | 3.67 | 3.21 | 4.99 | 4.50 | 65.3 | 12 |
| Jun. 23, 2008 | 1730 | 330 | 2.06 | 2.38 | 3.71 | 3.54 | 65.3 | 4 |
| Oct. 17, 2008 | 1845 | 330 | 5.72 | 5.07 | 6.32 | 6.90 | 70.0 | 2 |
| Nov. 06, 2008 | 1700 | 330 | 3.81 | 4.50 | 4.87 | 5.52 | 68.6 | 1 |
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