PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/12-14:42:30
G07     56.3           67.7                9.6 +/-    0.91      10.3 +/-    0.91  0.150 / 0.090
G08     54.1           43.2                8.7 +/-    1.03      12.0 +/-    1.03  0.180 / 0.120
G09     179.3          41.1               11.2 +/-    0.72      16.0 +/-    0.72  0.070 / 0.130
G11     121.2          34.2               10.8 +/-    1.15      17.4 +/-    1.15  0.080 / 0.110
G18     105.4          15.0                9.2 +/-    1.40      22.9 +/-    1.40  0.030 / 0.030
G27     37.9           10.9                8.9 +/-    1.49      24.5 +/-    1.49  0.040 / 0.030
G28     265.9          46.6               10.4 +/-    3.98      13.7 +/-    3.98  0.250 / 0.270
G30     333.1          60.6                9.1 +/-    1.08      10.2 +/-    1.08  0.150 / 0.220