PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-19:43:00
G02     253.0          77.5               11.4 +/-    0.37      11.7 +/-    0.37  0.110 / 0.140
G05     170.1          19.8               14.0 +/-    1.39      31.0 +/-    1.39  0.180 / 0.150
G06     40.3           52.6               11.5 +/-    0.56      14.0 +/-    0.56  0.070 / 0.120
G12     322.0          59.3                9.6 +/-    1.11      11.0 +/-    1.11  0.090 / 0.160
G17     74.1           20.3                9.9 +/-    1.82      21.6 +/-    1.82  0.150 / 0.220
G19     59.1           38.4               11.1 +/-    0.92      16.6 +/-    0.92  0.320 / 0.310
G24     239.8          32.3               12.7 +/-    1.01      21.2 +/-    1.01  0.040 / 0.030
G25     317.3          15.9                9.2 +/-    1.47      22.3 +/-    1.47  0.060 / 0.040