PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/07-08:42:40
G07     43.5           69.1                4.3 +/-    0.90       4.6 +/-    0.90  0.330 / 0.220
G08     57.3           46.1                2.7 +/-    1.17       3.6 +/-    1.17  0.180 / 0.310
G09     178.0          41.4                5.2 +/-    0.96       7.4 +/-    0.96  0.030 / 0.030
G11     124.9          33.1                4.9 +/-    1.16       8.1 +/-    1.16  0.030 / 0.030
G18     107.6          14.1                4.2 +/-    2.88      10.7 +/-    2.88  0.110 / 0.330
G23     159.8          10.9                4.2 +/-    5.61      11.5 +/-    5.61  0.120 / 0.440
G27     38.1           11.7                2.8 +/-    1.70       7.6 +/-    1.70  0.040 / 0.050
G28     262.4          44.1                3.8 +/-    4.09       5.2 +/-    4.09  0.050 / 0.040
G30     325.7          55.6                3.6 +/-    0.66       4.2 +/-    0.66  0.070 / 0.070