PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/28-10:12:30
G02     201.5          21.7                4.9 +/-    2.60      10.3 +/-    2.60  0.230 / 0.470
G06     168.9          57.4                7.2 +/-    0.55       8.4 +/-    0.55  0.250 / 0.540
G13     224.6          11.1                4.8 +/-    1.59      13.1 +/-    1.59  0.080 / 0.090
G17     28.0           55.5                4.4 +/-    0.62       5.3 +/-    0.62  0.080 / 0.100
G19     320.9          70.0                4.4 +/-    0.85       4.7 +/-    0.85  0.110 / 0.220
G24     305.5          34.7                2.7 +/-    1.11       4.3 +/-    1.11  0.120 / 0.190
G28     90.4           39.1                6.1 +/-    1.53       9.0 +/-    1.53  0.030 / 0.040
G30     158.0          13.3                3.7 +/-    1.50       9.6 +/-    1.50  0.050 / 0.040