PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-13:12:40
G07     325.0          54.8                4.3 +/-    0.97       5.2 +/-    0.97  0.040 / 0.050
G08     108.4          50.1                6.2 +/-    0.60       7.9 +/-    0.60  0.040 / 0.060
G09     197.8          78.3                4.1 +/-    1.07       4.2 +/-    1.07  0.060 / 0.140
G11     149.1          10.0               -7.1 +/-   11.27     -19.9 +/-   11.27  0.060 / 0.110
G23     152.9          45.3                6.5 +/-    0.64       8.8 +/-    0.64  0.040 / 0.030
G27     60.6           34.2                5.4 +/-    0.79       8.7 +/-    0.79  0.040 / 0.070
G28     233.3          25.2                7.1 +/-    1.59      13.8 +/-    1.59  0.040 / 0.080
G30     297.5          31.2                3.2 +/-    1.43       5.5 +/-    1.43  0.040 / 0.070