PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-18:27:50
G02     8.1            70.9                6.9 +/-    0.43       7.3 +/-    0.43  0.040 / 0.090
G05     158.3          45.7                8.9 +/-    1.22      11.9 +/-    1.22  0.060 / 0.070
G06     46.3           27.2                5.3 +/-    0.82       9.9 +/-    0.82  0.250 / 0.390
G12     234.2          81.2                5.7 +/-    0.31       5.7 +/-    0.31  0.120 / 0.460
G19     84.5           22.8                7.9 +/-    1.47      16.2 +/-    1.47  0.030 / 0.030
G24     217.9          13.6               10.1 +/-    2.71      26.1 +/-    2.71  0.020 / 0.020
G25     312.9          40.9                6.4 +/-    1.98       9.2 +/-    1.98  0.060 / 0.100
G29     294.6          15.1                7.0 +/-    1.90      17.3 +/-    1.90  0.050 / 0.090