PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-05:13:00
G02     59.2           32.2                3.0 +/-    1.98       5.0 +/-    1.98  0.060 / 0.100
G05     59.4           61.0                4.7 +/-    0.54       5.3 +/-    0.54  0.080 / 0.110
G12     185.9          35.1                8.0 +/-    1.01      12.7 +/-    1.01  0.030 / 0.040
G13     130.1          13.9                6.2 +/-    3.04      15.9 +/-    3.04  0.030 / 0.030
G15     163.9          11.2               -0.8 +/-   13.20      -2.1 +/-   13.20  0.130 / 0.340
G20     214.1          36.5                7.8 +/-    1.58      12.1 +/-    1.58  0.140 / 0.350
G21     270.0          16.7                4.4 +/-    2.78      10.5 +/-    2.78  0.080 / 0.120
G25     241.2          53.1                7.8 +/-    3.15       9.4 +/-    3.15  0.120 / 0.150
G29     327.2          52.9                4.3 +/-    0.72       5.2 +/-    0.72  0.080 / 0.070