PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/31-12:58:00
G02     201.0          14.4                5.1 +/-    3.21      12.9 +/-    3.21  0.120 / 0.150
G06     170.2          50.9                4.9 +/-    0.46       6.1 +/-    0.46  0.110 / 0.160
G13     228.2          15.6                5.6 +/-    2.17      13.7 +/-    2.17  0.040 / 0.030
G17     13.0           64.6                3.9 +/-    1.07       4.3 +/-    1.07  0.030 / 0.030
G19     317.1          72.1                3.0 +/-    0.96       3.1 +/-    0.96  0.040 / 0.030
G24     312.2          26.2                3.4 +/-    1.16       6.5 +/-    1.16  0.040 / 0.030
G28     78.5           47.0                4.7 +/-    1.07       6.1 +/-    1.07  0.040 / 0.060
G30     157.0          18.3                5.2 +/-    1.62      11.9 +/-    1.62  0.050 / 0.050