PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/06-23:12:40
G07     334.9          58.6                7.5 +/-    0.54       8.7 +/-    0.54  0.090 / 0.130
G08     99.1           52.6                9.8 +/-    0.43      12.0 +/-    0.43  0.070 / 0.130
G09     192.5          72.9                8.3 +/-    0.56       8.7 +/-    0.56  0.070 / 0.060
G11     146.7          13.3                9.0 +/-    3.64      23.3 +/-    3.64  0.130 / 0.080
G23     155.7          39.1                9.9 +/-    0.92      14.7 +/-    0.92  0.030 / 0.040
G27     52.9           30.2                8.0 +/-    1.90      14.0 +/-    1.90  0.030 / 0.040
G28     238.9          31.5               10.5 +/-    1.62      17.8 +/-    1.62  0.110 / 0.270
G30     305.8          39.6                8.0 +/-    1.60      11.7 +/-    1.60  0.120 / 0.260