PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-02:12:50
G08     311.1          17.7                7.3 +/-    2.07      16.9 +/-    2.07  0.080 / 0.080
G10     337.2          60.8                9.3 +/-    0.78      10.4 +/-    0.78  0.070 / 0.070
G14     218.2          31.2                9.2 +/-    2.95      15.7 +/-    2.95  0.030 / 0.030
G20     39.1           60.1               10.0 +/-    0.69      11.3 +/-    0.69  0.030 / 0.030
G21     135.5          56.7               11.8 +/-    0.54      13.8 +/-    0.54  0.030 / 0.050
G24     73.2           30.1               10.9 +/-    0.83      19.0 +/-    0.83  0.040 / 0.050
G27     274.3          37.4                8.6 +/-    3.01      13.1 +/-    3.01  0.130 / 0.160
G32     223.6          51.9               10.8 +/-    2.15      13.3 +/-    2.15  0.090 / 0.230