PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-01:57:10
G02     46.2           43.5                4.9 +/-    0.30       6.7 +/-    0.30  0.070 / 0.060
G05     96.8           68.9                5.9 +/-    0.92       6.3 +/-    0.92  0.020 / 0.040
G12     191.5          53.8                9.5 +/-    1.53      11.5 +/-    1.53  0.040 / 0.060
G25     268.0          58.8                6.7 +/-    1.03       7.7 +/-    1.03  0.030 / 0.050
G29     319.8          43.0                7.3 +/-    0.88      10.2 +/-    0.88  0.040 / 0.070