PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-02:57:50
G02     58.8           32.8                3.2 +/-    1.09       5.2 +/-    1.09  0.060 / 0.090
G05     59.4           61.1                6.8 +/-    0.44       7.7 +/-    0.44  0.070 / 0.100
G12     185.1          34.4               10.1 +/-    1.09      16.2 +/-    1.09  0.230 / 0.450
G13     129.8          14.0                8.8 +/-    2.43      22.3 +/-    2.43  0.110 / 0.460
G15     164.5          10.9               -1.2 +/-   18.29      -3.2 +/-   18.29  0.030 / 0.040
G20     217.1          18.8               10.1 +/-    2.17      22.8 +/-    2.17  0.030 / 0.030
G21     269.8          16.0                9.2 +/-    2.33      22.3 +/-    2.33  0.090 / 0.080
G25     240.9          53.1                9.2 +/-    3.37      11.2 +/-    3.37  0.090 / 0.100
G29     326.7          52.3                8.7 +/-    1.54      10.6 +/-    1.54  0.030 / 0.040