PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/23-07:27:50
G08     317.3          14.3                3.2 +/-    0.96       8.1 +/-    0.96  0.060 / 0.080
G10     315.5          57.2                2.4 +/-    0.39       2.8 +/-    0.39  0.060 / 0.090
G14     213.0          22.0                4.6 +/-    2.69       9.5 +/-    2.69  0.050 / 0.050
G15     45.6           17.7                2.4 +/-    1.09       5.6 +/-    1.09  0.050 / 0.050
G20     17.5           63.6                5.4 +/-    0.77       6.0 +/-    0.77  0.040 / 0.040
G21     121.9          64.6                6.8 +/-    0.81       7.5 +/-    0.81  0.040 / 0.040
G24     84.7           29.2                4.0 +/-    0.83       7.1 +/-    0.83  0.060 / 0.130
G27     289.9          36.8                5.1 +/-    1.04       7.9 +/-    1.04  0.070 / 0.130
G32     216.1          37.6                6.0 +/-    1.61       9.1 +/-    1.61  0.090 / 0.180