PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-05:43:00
G10     299.1          52.3                6.8 +/-    1.81       8.3 +/-    1.81  0.040 / 0.040
G15     46.0           27.4                3.6 +/-    1.32       6.7 +/-    1.32  0.040 / 0.030
G20     28.6           60.7                6.7 +/-    0.70       7.5 +/-    0.70  0.070 / 0.110
G21     99.3           73.9                8.6 +/-    0.43       8.9 +/-    0.43  0.060 / 0.110
G24     95.7           26.9                6.2 +/-    1.07      11.6 +/-    1.07  0.080 / 0.110
G27     298.7          34.9                6.7 +/-    1.13      10.7 +/-    1.13  0.090 / 0.120
G32     210.8          35.0                9.7 +/-    1.83      15.3 +/-    1.83  0.060 / 0.120