PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/18-20:43:10
G02     27.9           59.5                9.7 +/-    0.55      11.0 +/-    0.55  0.030 / 0.050
G05     144.5          59.1               12.3 +/-    0.80      14.0 +/-    0.80  0.040 / 0.050
G06     52.4           17.0                7.6 +/-    1.32      17.9 +/-    1.32  0.030 / 0.040
G12     195.8          69.6                9.6 +/-    0.84      10.2 +/-    0.84  0.030 / 0.030
G19     96.1           14.3               10.2 +/-    1.46      25.7 +/-    1.46  0.040 / 0.070
G25     301.5          51.4               10.0 +/-    1.32      12.4 +/-    1.32  0.050 / 0.070
G29     304.2          24.2               10.4 +/-    1.67      20.7 +/-    1.67  0.050 / 0.050