PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/11-00:58:10
G02     255.8          79.2                9.7 +/-    0.46       9.9 +/-    0.46  0.170 / 0.280
G05     169.7          19.5               11.2 +/-    2.27      24.9 +/-    2.27  0.510 / 0.290
G06     39.0           58.9                8.5 +/-    0.55       9.8 +/-    0.55  0.090 / 0.110
G12     320.7          52.2                9.5 +/-    1.72      11.7 +/-    1.72  0.100 / 0.100
G17     73.7           19.5                7.4 +/-    1.46      16.6 +/-    1.46  0.040 / 0.050
G19     60.0           36.5                9.3 +/-    1.32      14.3 +/-    1.32  0.050 / 0.040
G24     240.3          32.6               12.0 +/-    1.39      19.9 +/-    1.39  0.070 / 0.060
G25     316.9          15.9                6.3 +/-    1.24      15.3 +/-    1.24  0.070 / 0.070