PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-09:12:50
G10     279.7          44.6                4.4 +/-    0.93       5.9 +/-    0.93  0.040 / 0.080
G15     50.0           38.6                3.5 +/-    0.55       5.2 +/-    0.55  0.050 / 0.080
G20     51.7           43.6                3.4 +/-    0.54       4.7 +/-    0.54  0.030 / 0.040
G21     44.3           76.8                3.2 +/-    0.66       3.3 +/-    0.66  0.030 / 0.040
G24     110.9          20.4                5.9 +/-    0.53      12.7 +/-    0.53  0.060 / 0.110
G27     311.6          27.6                5.3 +/-    1.28       9.8 +/-    1.28  0.060 / 0.130
G29     168.5          19.4                2.8 +/-    1.97       6.3 +/-    1.97  0.040 / 0.050
G32     206.1          20.7                3.9 +/-    2.28       8.5 +/-    2.28  0.060 / 0.050