PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-02:28:00
G07     351.0          63.4                4.6 +/-    0.73       5.1 +/-    0.73  0.060 / 0.110
G08     80.9           52.3                6.1 +/-    0.99       7.5 +/-    0.99  0.060 / 0.090
G09     184.0          63.0                8.2 +/-    0.43       9.1 +/-    0.43  0.030 / 0.040
G11     139.5          19.2                7.6 +/-    1.93      17.1 +/-    1.93  0.040 / 0.040
G23     158.5          31.4                8.1 +/-    0.92      13.8 +/-    0.92  0.030 / 0.030
G27     46.1           24.6                4.3 +/-    2.19       8.6 +/-    2.19  0.030 / 0.030
G28     247.0          38.2                3.9 +/-    1.89       5.9 +/-    1.89  0.090 / 0.160
G30     312.0          43.9                4.1 +/-    0.76       5.6 +/-    0.76  0.080 / 0.150