PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/19-14:42:40
G02     207.0          40.3               10.3 +/-    2.19      14.9 +/-    2.19  0.030 / 0.030
G06     135.0          76.7                8.6 +/-    0.70       8.8 +/-    0.70  0.030 / 0.030
G12     311.1          21.4                7.6 +/-    2.08      16.2 +/-    2.08  0.080 / 0.220
G17     40.1           46.2                5.3 +/-    0.46       7.1 +/-    0.46  0.070 / 0.180
G19     19.2           59.1                8.2 +/-    0.79       9.4 +/-    0.79  0.050 / 0.080
G24     288.8          40.4                7.2 +/-    0.73      10.4 +/-    0.73  0.050 / 0.080
G28     106.9          31.5                8.4 +/-    1.28      14.3 +/-    1.28  0.060 / 0.140