PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/22-14:28:10
G02     206.7          39.4               12.6 +/-    1.02      18.6 +/-    1.02  0.050 / 0.090
G06     137.8          76.1                8.3 +/-    0.86       8.5 +/-    0.86  0.050 / 0.080
G12     310.7          20.8                8.2 +/-    2.36      17.6 +/-    2.36  0.110 / 0.240
G17     39.5           46.6                5.9 +/-    0.33       7.8 +/-    0.33  0.160 / 0.260
G19     18.0           59.6                8.1 +/-    1.19       9.2 +/-    1.19  0.050 / 0.120
G24     289.9          40.2                7.6 +/-    0.75      11.1 +/-    0.75  0.050 / 0.130
G28     106.2          32.1                7.3 +/-    0.68      12.2 +/-    0.68  0.040 / 0.040