PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-17:12:40
G02     34.7           54.0                7.7 +/-    0.43       9.3 +/-    0.43  0.030 / 0.040
G05     132.6          66.5                9.1 +/-    0.69       9.8 +/-    0.69  0.030 / 0.040
G06     57.7           10.2                6.7 +/-    2.14      18.5 +/-    2.14  0.080 / 0.240
G12     188.0          58.2                8.3 +/-    1.53       9.6 +/-    1.53  0.070 / 0.270
G25     283.0          58.2                7.1 +/-    0.91       8.2 +/-    0.91  0.040 / 0.050
G29     311.3          32.0                5.4 +/-    1.17       9.0 +/-    1.17  0.040 / 0.050