PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/13-15:57:50
G02     76.8           18.9                7.4 +/-    0.62      16.8 +/-    0.62  0.030 / 0.050
G05     44.6           43.8                6.6 +/-    0.56       9.1 +/-    0.56  0.030 / 0.050
G12     178.3          10.3                9.7 +/-    2.34      26.9 +/-    2.34  0.080 / 0.150
G13     106.7          28.4               10.1 +/-    1.13      18.3 +/-    1.13  0.080 / 0.160
G15     150.1          31.4                8.9 +/-    0.97      15.2 +/-    0.97  0.070 / 0.120
G20     229.6          17.7                7.8 +/-    1.89      18.1 +/-    1.89  0.070 / 0.120
G21     289.8          30.0                7.8 +/-    2.04      13.6 +/-    2.04  0.070 / 0.170
G25     215.0          34.2                8.3 +/-    2.00      13.3 +/-    2.00  0.070 / 0.180
G26     312.5          14.9                5.0 +/-    3.06      12.4 +/-    3.06  0.020 / 0.040
G29     346.1          75.8                8.0 +/-    0.54       8.2 +/-    0.54  0.030 / 0.030