PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/08-11:13:10
G10     243.2          19.5                4.3 +/-    2.34       9.5 +/-    2.34  0.040 / 0.050
G13     63.9           34.9                5.3 +/-    0.98       8.4 +/-    0.98  0.050 / 0.040
G15     102.6          56.6                6.8 +/-    0.47       7.9 +/-    0.47  0.110 / 0.270
G16     306.4          14.1                3.7 +/-    1.47       9.4 +/-    1.47  0.200 / 0.310
G20     30.1           61.8                4.7 +/-    0.48       5.3 +/-    0.48  0.050 / 0.040
G21     326.0          55.8                3.4 +/-    0.46       4.0 +/-    0.46  0.040 / 0.040
G26     277.3          18.6                2.7 +/-    0.74       6.2 +/-    0.74  0.050 / 0.090
G29     160.6          58.5                6.7 +/-    0.63       7.7 +/-    0.63  0.060 / 0.090