PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/13-18:57:50
G02     26.8           60.2                7.9 +/-    0.74       9.0 +/-    0.74  0.040 / 0.040
G05     145.5          59.0               10.0 +/-    0.58      11.5 +/-    0.58  0.030 / 0.040
G06     52.6           16.5                7.5 +/-    1.64      18.1 +/-    1.64  0.040 / 0.050
G12     192.8          68.6                8.4 +/-    0.44       8.9 +/-    0.44  0.070 / 0.060
G19     96.0           14.7                9.4 +/-    1.84      23.5 +/-    1.84  0.030 / 0.030
G25     301.0          51.9                8.2 +/-    2.16      10.1 +/-    2.16  0.030 / 0.030
G29     304.2          24.2                7.2 +/-    0.78      14.4 +/-    0.78  0.060 / 0.110