PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/28-05:58:10
G10     271.5          41.6                7.3 +/-    1.26      10.4 +/-    1.26  0.060 / 0.050
G13     40.0           14.6                3.7 +/-    3.55       9.2 +/-    3.55  0.080 / 0.060
G15     54.7           44.6                5.0 +/-    0.91       6.8 +/-    0.91  0.030 / 0.030
G16     279.2          10.7                6.3 +/-    1.95      17.3 +/-    1.95  0.040 / 0.030
G20     305.7          61.9                5.6 +/-    0.87       6.3 +/-    0.87  0.130 / 0.180
G21     19.1           74.2                5.9 +/-    0.62       6.1 +/-    0.62  0.140 / 0.180
G24     116.6          16.5                6.7 +/-    1.31      16.1 +/-    1.31  0.190 / 0.280
G27     317.7          20.4                3.3 +/-    1.94       7.3 +/-    1.94  0.220 / 0.350
G29     165.9          23.8                6.8 +/-    1.43      13.6 +/-    1.43  0.140 / 0.220