PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/27-07:12:40
G08     316.9          14.6                3.4 +/-    1.09       8.5 +/-    1.09  0.030 / 0.050
G10     316.6          57.4                3.4 +/-    0.77       4.0 +/-    0.77  0.040 / 0.040
G14     213.3          22.5                7.7 +/-    2.70      16.0 +/-    2.70  0.070 / 0.090
G15     45.7           17.1                3.0 +/-    0.78       7.1 +/-    0.78  0.080 / 0.080
G20     18.8           63.4                3.9 +/-    0.75       4.3 +/-    0.75  0.040 / 0.030
G21     122.8          64.2                6.5 +/-    0.58       7.1 +/-    0.58  0.040 / 0.040
G24     84.1           29.3                4.5 +/-    0.96       8.1 +/-    0.96  0.070 / 0.150
G27     289.1          36.9                5.5 +/-    1.36       8.4 +/-    1.36  0.070 / 0.130
G32     216.5          38.4                8.3 +/-    1.28      12.4 +/-    1.28  0.080 / 0.230