PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/14-06:58:10
G10     272.9          42.3                7.6 +/-    0.95      10.7 +/-    0.95  0.040 / 0.030
G13     39.6           13.7                3.4 +/-    3.46       8.7 +/-    3.46  0.030 / 0.030
G15     53.8           43.7                4.6 +/-    0.81       6.3 +/-    0.81  0.110 / 0.070
G20     308.2          62.4                6.4 +/-    0.56       7.1 +/-    0.56  0.060 / 0.050
G21     25.3           74.8                5.7 +/-    1.10       5.9 +/-    1.10  0.170 / 0.220
G24     115.2          17.2                6.2 +/-    2.60      14.5 +/-    2.60  0.170 / 0.200
G27     317.1          21.2                3.3 +/-    2.49       7.0 +/-    2.49  0.290 / 0.330
G29     165.7          22.0                4.9 +/-    0.93      10.3 +/-    0.93  0.360 / 0.240