PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-03:57:30
G02     84.3           12.6                4.8 +/-    2.02      12.6 +/-    2.02  0.050 / 0.120
G05     44.8           30.8                3.6 +/-    0.43       6.2 +/-    0.43  0.050 / 0.090
G13     97.3           32.8                9.2 +/-    1.06      15.2 +/-    1.06  0.080 / 0.090
G15     142.9          39.2                9.4 +/-    0.79      13.9 +/-    0.79  0.070 / 0.100
G20     234.7          23.4                8.8 +/-    1.14      17.8 +/-    1.14  0.050 / 0.120
G21     298.6          37.2                8.1 +/-    0.94      12.3 +/-    0.94  0.060 / 0.130
G25     208.0          25.5                7.1 +/-    1.33      13.6 +/-    1.33  0.070 / 0.180
G26     307.2          16.8                5.6 +/-    2.15      13.4 +/-    2.15  0.080 / 0.160
G29     83.0           84.9                8.0 +/-    0.82       8.0 +/-    0.82  0.030 / 0.020