PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/22-22:12:30
G10     250.7          27.0                8.7 +/-    2.05      16.2 +/-    2.05  0.040 / 0.050
G13     53.2           29.6                7.3 +/-    1.99      12.8 +/-    1.99  0.030 / 0.040
G15     92.4           59.4                8.3 +/-    0.90       9.5 +/-    0.90  0.140 / 0.330
G16     293.7          16.1                7.7 +/-    1.33      18.7 +/-    1.33  0.150 / 0.260
G20     253.8          17.8                4.6 +/-    2.85      10.6 +/-    2.85  0.060 / 0.190
G21     332.4          59.5                6.9 +/-    0.45       7.9 +/-    0.45  0.090 / 0.130
G26     266.0          15.7                9.6 +/-    1.45      23.4 +/-    1.45  0.040 / 0.030
G29     165.3          51.0                9.5 +/-    0.68      11.8 +/-    0.68  0.030 / 0.030