PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/28-14:12:30
G02     241.3          73.0                5.2 +/-    0.77       5.4 +/-    0.77  0.110 / 0.380
G05     173.9          14.9                6.8 +/-    1.88      17.0 +/-    1.88  0.170 / 0.380
G06     40.4           56.4                5.4 +/-    0.43       6.4 +/-    0.43  0.040 / 0.040
G12     322.2          55.8                3.5 +/-    1.09       4.2 +/-    1.09  0.030 / 0.050
G17     72.6           20.1                4.7 +/-    0.91      10.4 +/-    0.91  0.110 / 0.090
G19     54.6           41.5                5.0 +/-    0.88       7.1 +/-    0.88  0.100 / 0.110
G24     240.7          33.8                7.0 +/-    1.61      11.3 +/-    1.61  0.110 / 0.260
G25     316.8          15.6                2.5 +/-    3.01       6.0 +/-    3.01  0.100 / 0.280