PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-07:43:10
G07     24.2           68.6                5.0 +/-    0.43       5.4 +/-    0.43  0.060 / 0.050
G08     64.6           49.4                5.7 +/-    0.57       7.3 +/-    0.57  0.060 / 0.050
G09     178.4          48.0                8.4 +/-    1.32      10.9 +/-    1.32  0.030 / 0.040
G11     130.9          28.9                7.6 +/-    0.81      13.6 +/-    0.81  0.030 / 0.040
G18     113.0          10.8               -3.4 +/-   23.81      -9.3 +/-   23.81  0.090 / 0.180
G23     159.7          17.4                6.0 +/-    3.11      14.0 +/-    3.11  0.080 / 0.160
G27     40.2           16.7                2.0 +/-    1.05       4.7 +/-    1.05  0.080 / 0.260
G28     255.1          39.7                5.3 +/-    1.68       7.8 +/-    1.68  0.080 / 0.250
G30     319.5          50.2                5.2 +/-    1.18       6.6 +/-    1.18  0.040 / 0.050