PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-06:42:50
G10     271.8          40.7                6.4 +/-    0.66       9.2 +/-    0.66  0.090 / 0.570
G13     40.2           15.1                3.4 +/-    2.02       8.5 +/-    2.02  0.100 / 0.520
G15     54.7           44.9                3.1 +/-    0.71       4.2 +/-    0.71  0.070 / 0.140
G16     274.4          10.4                4.0 +/-    2.10      11.0 +/-    2.10  0.070 / 0.120
G20     19.9           63.1                3.7 +/-    0.60       4.1 +/-    0.60  0.040 / 0.050
G21     14.8           74.4                5.7 +/-    0.89       5.9 +/-    0.89  0.040 / 0.060
G24     116.6          16.7                6.6 +/-    1.16      15.6 +/-    1.16  0.070 / 0.080
G27     316.1          22.7                1.9 +/-    2.05       3.9 +/-    2.05  0.080 / 0.070
G29     168.5          26.8                6.7 +/-    1.19      12.6 +/-    1.19  0.080 / 0.220
G32     204.6          14.7                4.6 +/-    1.74      11.5 +/-    1.74  0.080 / 0.220