PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/28-18:58:10
G10     259.7          32.9               13.5 +/-    2.18      22.4 +/-    2.18  0.110 / 0.280
G13     46.5           24.8               12.4 +/-    0.85      24.3 +/-    0.85  0.170 / 0.320
G15     67.4           52.8               13.0 +/-    0.27      15.9 +/-    0.27  0.040 / 0.040
G16     291.2          12.5               11.9 +/-    2.86      31.5 +/-    2.86  0.040 / 0.040
G18     288.0          62.3               12.6 +/-    0.62      14.0 +/-    0.62  0.040 / 0.070
G20     49.2           41.0               12.0 +/-    0.40      17.1 +/-    0.40  0.050 / 0.080
G21     355.3          69.1               13.8 +/-    0.79      14.7 +/-    0.79  0.130 / 0.540
G26     263.2          11.1               11.1 +/-    2.58      30.2 +/-    2.58  0.100 / 0.490
G27     320.6          14.6               11.4 +/-    2.05      28.5 +/-    2.05  0.130 / 0.450
G29     164.3          32.7               14.2 +/-    1.19      23.5 +/-    1.19  0.130 / 0.370