PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/13-17:12:30
G02     206.2          41.1               13.2 +/-    0.70      18.8 +/-    0.70  0.060 / 0.150
G06     140.8          76.0               11.4 +/-    0.69      11.7 +/-    0.69  0.080 / 0.140
G12     310.4          19.8               10.2 +/-    1.49      22.5 +/-    1.49  0.050 / 0.090
G17     40.2           46.0               10.0 +/-    1.03      13.2 +/-    1.03  0.050 / 0.080
G19     17.5           59.8               11.0 +/-    0.75      12.6 +/-    0.75  0.130 / 0.120
G24     289.1          40.6                8.4 +/-    4.62      12.1 +/-    4.62  0.140 / 0.100
G28     106.6          31.3               10.0 +/-    0.93      17.1 +/-    0.93  0.040 / 0.040