PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/25-02:42:50
G02     35.8           53.2                8.7 +/-    1.38      10.6 +/-    1.38  0.230 / 0.200
G05     132.7          63.7               10.4 +/-    0.42      11.4 +/-    0.42  0.210 / 0.240
G06     54.7           14.7                7.0 +/-    2.54      17.7 +/-    2.54  0.030 / 0.030
G12     197.9          66.4               10.5 +/-    0.57      11.4 +/-    0.57  0.030 / 0.030
G19     100.9          9.7                10.2 +/-    2.59      28.6 +/-    2.59  0.030 / 0.030
G25     295.8          53.6               10.1 +/-    3.47      12.3 +/-    3.47  0.030 / 0.030
G29     308.1          28.6                7.4 +/-    1.40      13.3 +/-    1.40  0.080 / 0.060