PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/21-15:12:50
G02     217.5          58.0               10.1 +/-    0.52      11.7 +/-    0.52  0.080 / 0.090
G06     55.3           72.9               10.6 +/-    0.68      11.0 +/-    0.68  0.070 / 0.100
G12     318.2          36.3                7.1 +/-    1.23      11.0 +/-    1.23  0.060 / 0.080
G17     55.5           34.6                7.1 +/-    0.40      11.4 +/-    0.40  0.040 / 0.080
G19     41.5           47.3                9.0 +/-    0.48      11.7 +/-    0.48  0.130 / 0.310
G24     265.4          40.9               11.2 +/-    2.25      16.1 +/-    2.25  0.120 / 0.360
G28     121.2          19.0                9.1 +/-    0.67      20.5 +/-    0.67  0.040 / 0.030