PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-08:57:40
G07     40.9           69.5                4.8 +/-    0.60       5.1 +/-    0.60  0.040 / 0.050
G08     53.0           41.3                3.9 +/-    1.27       5.5 +/-    1.27  0.040 / 0.040
G09     174.7          36.3                7.5 +/-    0.59      11.6 +/-    0.59  0.030 / 0.040
G11     121.5          33.0                6.4 +/-    1.18      10.5 +/-    1.18  0.030 / 0.040
G17     198.8          11.9                2.8 +/-    8.64       7.4 +/-    8.64  0.150 / 0.200
G18     106.5          14.4                5.7 +/-    1.04      14.3 +/-    1.04  0.120 / 0.250
G23     161.0          12.7                4.2 +/-    1.81      11.0 +/-    1.81  0.180 / 0.290
G27     38.2           11.8                1.9 +/-    2.00       5.1 +/-    2.00  0.130 / 0.370
G28     268.5          49.7                4.8 +/-    0.69       6.1 +/-    0.69  0.070 / 0.280
G30     326.1          55.5                3.7 +/-    0.69       4.4 +/-    0.69  0.070 / 0.250