PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-04:58:00
G05     51.0           11.2                1.7 +/-    2.84       4.7 +/-    2.84  0.050 / 0.040
G10     239.8          17.8                7.2 +/-    2.96      16.6 +/-    2.96  0.040 / 0.050
G13     67.9           34.7                3.4 +/-    0.97       5.4 +/-    0.97  0.120 / 0.220
G15     112.1          55.4                5.6 +/-    0.42       6.6 +/-    0.42  0.090 / 0.210
G20     253.9          41.4                8.7 +/-    2.07      12.4 +/-    2.07  0.080 / 0.110
G21     320.7          51.9                4.8 +/-    0.67       5.9 +/-    0.67  0.050 / 0.100
G26     284.5          18.8                5.7 +/-    0.87      12.9 +/-    0.87  0.360 / 0.230
G29     155.1          61.5                5.6 +/-    0.34       6.3 +/-    0.34  0.250 / 0.280