PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-07:12:40
G07     32.9           69.3                6.4 +/-    0.51       6.8 +/-    0.51  0.030 / 0.040
G08     55.5           43.1                6.5 +/-    0.90       9.0 +/-    0.90  0.040 / 0.040
G09     174.5          39.1                7.9 +/-    1.31      11.6 +/-    1.31  0.030 / 0.030
G11     124.2          31.2                7.6 +/-    1.45      13.0 +/-    1.45  0.030 / 0.030
G18     108.7          12.9                6.0 +/-    1.80      15.6 +/-    1.80  0.240 / 0.150
G23     161.1          16.1                6.0 +/-    2.19      14.6 +/-    2.19  0.250 / 0.240
G27     39.2           14.5                3.3 +/-    2.78       8.2 +/-    2.78  0.220 / 0.370
G28     264.1          47.6                8.2 +/-    3.05      10.6 +/-    3.05  0.180 / 0.350
G30     323.1          53.0                5.4 +/-    0.47       6.6 +/-    0.47  0.050 / 0.080