PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-00:12:30
G07     350.0          63.3                7.6 +/-    0.46       8.4 +/-    0.46  0.060 / 0.090
G08     82.7           53.0                8.3 +/-    1.14      10.2 +/-    1.14  0.050 / 0.100
G09     184.6          63.3                9.3 +/-    0.93      10.2 +/-    0.93  0.060 / 0.090
G11     140.6          19.0               10.9 +/-    1.36      24.6 +/-    1.36  0.110 / 0.130
G23     158.1          30.4               11.0 +/-    1.04      19.2 +/-    1.04  0.040 / 0.040
G27     46.1           24.7                6.0 +/-    2.46      11.8 +/-    2.46  0.040 / 0.040
G28     246.9          38.2                9.3 +/-    1.49      14.0 +/-    1.49  0.030 / 0.040
G30     313.1          45.2                6.8 +/-    1.01       9.1 +/-    1.01  0.030 / 0.030