PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-07:28:00
G07     353.6          64.3                4.1 +/-    1.17       4.5 +/-    1.17  0.090 / 0.170
G08     86.0           53.5                6.1 +/-    1.15       7.3 +/-    1.15  0.090 / 0.220
G09     181.3          62.5                8.2 +/-    2.59       9.1 +/-    2.59  0.040 / 0.050
G11     140.5          20.2                6.0 +/-    2.16      13.2 +/-    2.16  0.030 / 0.060
G23     157.6          30.1                6.9 +/-    1.52      12.1 +/-    1.52  0.080 / 0.140
G27     47.3           26.1                5.7 +/-    2.79      10.9 +/-    2.79  0.070 / 0.120
G28     242.8          30.3                6.2 +/-    1.92      10.9 +/-    1.92  0.060 / 0.130
G30     308.8          40.7                3.9 +/-    1.54       5.7 +/-    1.54  0.060 / 0.120