PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-04:57:30
G02     52.5           38.0                3.5 +/-    0.83       5.2 +/-    0.83  0.040 / 0.060
G05     76.2           66.7                6.7 +/-    0.47       7.3 +/-    0.47  0.040 / 0.060
G12     187.9          44.4                6.7 +/-    1.42       9.1 +/-    1.42  0.070 / 0.080
G20     210.5          28.7                8.1 +/-    0.57      14.6 +/-    0.57  0.070 / 0.080
G21     263.4          11.5                3.5 +/-    5.16       9.3 +/-    5.16  0.120 / 0.190
G25     256.7          57.1                7.5 +/-    1.06       8.8 +/-    1.06  0.110 / 0.170
G29     321.8          45.3                3.4 +/-    0.94       4.6 +/-    0.94  0.030 / 0.040