PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/09-08:12:50
G10     269.7          39.5                5.2 +/-    2.11       7.6 +/-    2.11  0.100 / 0.230
G13     41.0           16.7                3.0 +/-    1.67       7.2 +/-    1.67  0.090 / 0.180
G15     56.0           45.9                3.3 +/-    0.72       4.5 +/-    0.72  0.170 / 0.210
G16     276.6          11.1                3.9 +/-    2.46      10.7 +/-    2.46  0.270 / 0.250
G20     37.7           54.8                4.4 +/-    1.04       5.3 +/-    1.04  0.120 / 0.240
G21     11.1           73.6                4.0 +/-    0.57       4.1 +/-    0.57  0.160 / 0.260
G24     118.4          15.6                6.7 +/-    1.43      16.3 +/-    1.43  0.040 / 0.050
G27     317.1          21.4                3.3 +/-    3.24       7.1 +/-    3.24  0.030 / 0.040
G29     168.2          28.3                6.2 +/-    0.83      11.2 +/-    0.83  0.030 / 0.040
G32     204.4          12.7                4.1 +/-    3.40      10.8 +/-    3.40  0.030 / 0.040