PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-05:28:00
G07     349.9          63.3                3.5 +/-    0.30       3.9 +/-    0.30  0.090 / 0.130
G08     79.9           51.1                4.9 +/-    0.75       6.1 +/-    0.75  0.070 / 0.130
G09     176.5          59.9                5.5 +/-    0.39       6.2 +/-    0.39  0.110 / 0.110
G11     138.5          19.5                5.9 +/-    2.31      13.1 +/-    2.31  0.060 / 0.090
G23     158.8          34.4                5.0 +/-    1.09       8.1 +/-    1.09  0.050 / 0.040
G27     48.9           28.0                2.2 +/-    1.99       4.0 +/-    1.99  0.040 / 0.030
G28     244.1          34.9                5.7 +/-    1.64       9.1 +/-    1.64  0.080 / 0.060
G30     307.8          39.6                2.7 +/-    1.56       4.0 +/-    1.56  0.080 / 0.130