PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-10:42:50
G01     61.4           30.4                4.2 +/-    0.85       7.3 +/-    0.85  0.090 / 0.140
G07     140.6          22.8                5.8 +/-    3.28      11.9 +/-    3.28  0.080 / 0.120
G11     49.7           27.3                1.2 +/-    1.88       2.2 +/-    1.88  0.030 / 0.030
G13     264.2          37.1                6.3 +/-    1.70       9.7 +/-    1.70  0.030 / 0.030
G15     296.9          15.8                2.6 +/-    0.91       6.4 +/-    0.91  0.090 / 0.090
G17     244.9          72.6                5.0 +/-    0.28       5.2 +/-    0.28  0.110 / 0.090
G18     43.2           14.1                2.1 +/-    2.63       5.3 +/-    2.63  0.110 / 0.370
G19     229.3          50.5                5.6 +/-    2.54       7.1 +/-    2.54  0.100 / 0.250
G28     18.3           60.3                3.6 +/-    1.31       4.1 +/-    1.31  0.040 / 0.050
G30     142.4          56.5                5.7 +/-    0.93       6.7 +/-    0.93  0.040 / 0.050