PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/20-06:13:10
G10     297.9          51.9                5.4 +/-    0.82       6.7 +/-    0.82  0.040 / 0.050
G15     46.1           27.9                2.5 +/-    1.18       4.6 +/-    1.18  0.040 / 0.040
G20     35.3           58.2                4.5 +/-    0.50       5.2 +/-    0.50  0.060 / 0.080
G21     97.0           74.2                5.2 +/-    0.64       5.4 +/-    0.64  0.070 / 0.070
G24     96.7           26.6                6.9 +/-    0.96      13.0 +/-    0.96  0.040 / 0.040
G27     299.5          34.6                5.8 +/-    1.25       9.3 +/-    1.25  0.040 / 0.040
G32     210.5          34.2                8.1 +/-    2.18      13.1 +/-    2.18  0.070 / 0.130