PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/27-14:27:50
G02     201.9          21.1                7.3 +/-    2.50      15.5 +/-    2.50  0.140 / 0.190
G06     165.3          59.5                5.9 +/-    0.74       6.7 +/-    0.74  0.140 / 0.190
G12     303.0          12.1               -0.2 +/-   14.07      -0.4 +/-   14.07  0.070 / 0.100
G13     224.4          10.8                4.5 +/-   13.01      12.3 +/-   13.01  0.080 / 0.110
G17     28.0           55.6                6.2 +/-    0.87       7.4 +/-    0.87  0.380 / 0.590
G19     321.2          70.0                5.5 +/-    0.50       5.8 +/-    0.50  0.330 / 0.520
G24     306.4          33.5                4.0 +/-    2.60       6.5 +/-    2.60  0.180 / 0.320
G28     91.4           37.9                5.5 +/-    1.42       8.3 +/-    1.42  0.380 / 0.400
G30     158.2          13.1                6.7 +/-    2.65      17.4 +/-    2.65  0.050 / 0.030