PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-09:12:30
G10     289.2          48.7                6.3 +/-    0.95       8.1 +/-    0.95  0.040 / 0.050
G15     47.1           32.2                3.5 +/-    0.58       5.8 +/-    0.58  0.040 / 0.050
G20     56.6           40.4                5.6 +/-    1.73       8.1 +/-    1.73  0.050 / 0.100
G21     77.0           76.2                7.4 +/-    1.16       7.6 +/-    1.16  0.060 / 0.090
G24     103.7          24.2                5.4 +/-    0.75      10.7 +/-    0.75  0.050 / 0.110
G27     305.4          32.0                5.2 +/-    0.96       8.8 +/-    0.96  0.060 / 0.090
G29     168.4          12.4                5.3 +/-    1.06      14.0 +/-    1.06  0.040 / 0.040
G32     208.3          27.9                6.5 +/-    3.23      11.9 +/-    3.23  0.030 / 0.040