PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/25-18:43:10
G02     249.2          76.5                9.5 +/-    0.81       9.7 +/-    0.81  0.060 / 0.220
G05     170.6          18.9               11.7 +/-    2.77      26.5 +/-    2.77  0.050 / 0.270
G06     40.4           53.2                9.4 +/-    0.67      11.4 +/-    0.67  0.030 / 0.040
G12     322.3          59.1                8.5 +/-    0.52       9.7 +/-    0.52  0.040 / 0.060
G17     73.8           20.1                9.6 +/-    0.71      21.0 +/-    0.71  0.040 / 0.040
G19     58.0           39.2                8.7 +/-    0.85      12.9 +/-    0.85  0.050 / 0.050
G24     240.3          32.7               10.7 +/-    1.90      17.7 +/-    1.90  0.120 / 0.380
G25     317.1          15.5                7.3 +/-    1.13      18.0 +/-    1.13  0.190 / 0.450