PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/31-15:28:10
G02     216.6          56.5               10.1 +/-    0.76      11.8 +/-    0.76  0.060 / 0.080
G06     55.7           72.0                9.7 +/-    0.38      10.1 +/-    0.38  0.070 / 0.050
G12     320.2          41.1                7.4 +/-    0.83      10.6 +/-    0.83  0.040 / 0.060
G17     58.4           30.6                7.5 +/-    3.03      13.0 +/-    3.03  0.040 / 0.070
G19     34.4           52.2               10.4 +/-    1.18      12.8 +/-    1.18  0.030 / 0.020
G24     263.0          42.0                9.0 +/-    2.37      12.7 +/-    2.37  0.030 / 0.020
G28     122.3          14.1                8.9 +/-    1.88      22.6 +/-    1.88  0.060 / 0.040