PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/26-06:58:10
G10     303.0          54.0                6.0 +/-    1.08       7.2 +/-    1.08  0.040 / 0.040
G14     210.6          14.9                4.6 +/-    4.40      11.4 +/-    4.40  0.030 / 0.030
G15     45.6           24.2                4.2 +/-    1.11       8.4 +/-    1.11  0.050 / 0.050
G20     0.1            65.0                6.1 +/-    1.27       6.6 +/-    1.27  0.050 / 0.040
G21     106.9          70.7                7.6 +/-    0.83       8.0 +/-    0.83  0.080 / 0.080
G24     93.4           27.4                8.8 +/-    1.17      16.3 +/-    1.17  0.090 / 0.100
G27     298.8          34.6                5.8 +/-    1.31       9.4 +/-    1.31  0.300 / 0.650
G32     212.4          30.4                6.1 +/-    0.87      10.5 +/-    0.87  0.190 / 0.580