PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-14:12:50
G01     85.9           31.9                9.8 +/-    1.29      16.5 +/-    1.29  0.050 / 0.050
G07     128.1          39.2               11.1 +/-    0.63      16.3 +/-    0.63  0.040 / 0.050
G11     65.1           39.3                9.2 +/-    1.14      13.6 +/-    1.14  0.070 / 0.090
G13     290.5          37.8               12.4 +/-    3.84      18.8 +/-    3.84  0.050 / 0.090
G15     313.3          11.2                2.6 +/-   16.29       7.0 +/-   16.29  0.060 / 0.080
G17     215.8          53.2               11.4 +/-    0.86      13.9 +/-    0.86  0.040 / 0.070
G18     60.0           22.9                8.3 +/-    2.53      17.1 +/-    2.53  0.070 / 0.070
G19     214.9          30.8               10.0 +/-    2.29      17.2 +/-    2.29  0.050 / 0.050
G28     341.1          61.5                9.0 +/-    0.79      10.1 +/-    0.79  0.100 / 0.110
G30     114.5          72.7               11.1 +/-    0.76      11.6 +/-    0.76  0.090 / 0.120