PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-19:12:40
G02     228.4          69.0               11.6 +/-    0.77      12.3 +/-    0.77  0.150 / 0.330
G05     174.0          11.3                3.1 +/-   27.45       8.4 +/-   27.45  0.200 / 0.410
G06     43.2           62.5               10.3 +/-    0.62      11.5 +/-    0.62  0.060 / 0.090
G12     322.0          49.2               10.6 +/-    0.52      13.5 +/-    0.52  0.050 / 0.080
G17     66.0           26.1                9.2 +/-    2.30      17.6 +/-    2.30  0.030 / 0.030
G19     48.5           44.6               10.9 +/-    0.70      14.7 +/-    0.70  0.030 / 0.030
G24     250.4          37.8               13.2 +/-    1.83      19.9 +/-    1.83  0.040 / 0.040