PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-02:42:40
G08     296.7          21.8                8.6 +/-    1.17      18.0 +/-    1.17  0.040 / 0.030
G10     10.1           62.7                6.3 +/-    0.97       7.0 +/-    0.97  0.040 / 0.030
G14     228.8          45.5               10.2 +/-    2.24      13.6 +/-    2.24  0.040 / 0.080
G20     64.5           52.7                7.2 +/-    1.19       8.8 +/-    1.19  0.040 / 0.070
G21     146.7          41.4                9.1 +/-    0.81      12.9 +/-    0.81  0.150 / 0.080
G24     56.8           25.9                7.0 +/-    1.19      13.4 +/-    1.19  0.100 / 0.150
G27     255.5          32.2                8.9 +/-    2.42      14.9 +/-    2.42  0.030 / 0.030
G32     243.4          66.2                7.8 +/-    0.57       8.4 +/-    0.57  0.030 / 0.030