PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-03:12:50
G01     253.1          36.4                6.8 +/-    1.06      10.5 +/-    1.06  0.040 / 0.040
G03     316.3          40.8                7.1 +/-    1.44      10.2 +/-    1.44  0.030 / 0.040
G11     237.7          12.9                7.9 +/-    2.22      20.8 +/-    2.22  0.070 / 0.090
G14     57.7           42.6                4.7 +/-    0.51       6.6 +/-    0.51  0.060 / 0.110
G18     221.0          28.5                6.9 +/-    0.61      12.4 +/-    0.61  0.050 / 0.100
G22     306.9          63.8                6.0 +/-    1.03       6.6 +/-    1.03  0.050 / 0.130
G23     285.0          17.7               -0.3 +/-    8.60      -0.7 +/-    8.60  0.050 / 0.080
G26     136.8          36.9                7.9 +/-    1.01      12.0 +/-    1.01  0.040 / 0.080
G31     41.8           59.6                4.4 +/-    0.45       5.0 +/-    0.45  0.180 / 0.550
G32     76.3           23.0                3.9 +/-    1.28       8.1 +/-    1.28  0.150 / 0.620