PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/07-05:57:40
G07     352.2          64.0                4.6 +/-    0.41       5.0 +/-    0.41  0.030 / 0.040
G08     84.1           52.9                6.3 +/-    1.16       7.7 +/-    1.16  0.030 / 0.040
G09     180.0          61.7                6.6 +/-    0.61       7.4 +/-    0.61  0.220 / 0.090
G11     141.0          20.1                5.9 +/-    1.34      13.0 +/-    1.34  0.170 / 0.090
G23     158.0          30.9                5.1 +/-    1.08       8.8 +/-    1.08  0.040 / 0.040
G27     47.3           26.0                3.5 +/-    1.64       6.8 +/-    1.64  0.030 / 0.050
G28     242.6          30.0                5.9 +/-    0.80      10.3 +/-    0.80  0.090 / 0.130
G30     308.3          40.0                4.0 +/-    1.45       5.8 +/-    1.45  0.070 / 0.100