PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/23-04:27:50
G01     303.3          36.7                4.6 +/-    1.65       7.1 +/-    1.65  0.070 / 0.080
G10     109.7          35.8                7.7 +/-    0.93      12.1 +/-    0.93  0.080 / 0.080
G11     278.1          27.2                7.1 +/-    1.69      13.1 +/-    1.69  0.040 / 0.050
G14     2.4            65.7                5.2 +/-    0.58       5.6 +/-    0.58  0.040 / 0.050
G18     270.0          50.5                8.0 +/-    9.17      10.0 +/-    9.17  0.070 / 0.150
G20     122.8          11.8                5.1 +/-    1.65      13.7 +/-    1.65  0.080 / 0.110
G22     311.2          28.4                2.5 +/-    1.56       4.5 +/-    1.56  0.060 / 0.060
G25     79.8           17.2                5.9 +/-    2.09      14.0 +/-    2.09  0.060 / 0.080
G31     158.2          69.5                6.2 +/-    0.47       6.5 +/-    0.47  0.030 / 0.030
G32     38.5           51.0                4.3 +/-    0.99       5.4 +/-    0.99  0.040 / 0.040