PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/30-08:12:40
G08     314.9          15.1                3.4 +/-    2.46       8.3 +/-    2.46  0.110 / 0.310
G10     325.4          58.8                3.5 +/-    0.77       4.0 +/-    0.77  0.110 / 0.290
G14     216.9          23.9                4.8 +/-    1.23       9.6 +/-    1.23  0.060 / 0.100
G15     46.3           12.9                1.1 +/-    1.32       3.0 +/-    1.32  0.050 / 0.110
G20     67.6           38.7                2.7 +/-    0.40       4.0 +/-    0.40  0.050 / 0.100
G21     130.7          60.3                6.2 +/-    1.01       7.1 +/-    1.01  0.050 / 0.090
G24     77.7           30.1                4.2 +/-    0.47       7.4 +/-    0.47  0.030 / 0.040
G27     278.5          37.8                5.6 +/-    0.98       8.5 +/-    0.98  0.040 / 0.040
G32     220.6          50.8                5.5 +/-    1.43       6.8 +/-    1.43  0.070 / 0.120