PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-07:58:10
G01     110.4          22.2                5.5 +/-    0.82      11.5 +/-    0.82  0.030 / 0.040
G07     99.0           60.7                5.4 +/-    0.56       6.1 +/-    0.56  0.040 / 0.030
G08     43.0           26.6                3.3 +/-    0.71       6.3 +/-    0.71  0.040 / 0.040
G09     174.8          17.8                5.0 +/-    1.27      11.6 +/-    1.27  0.030 / 0.050
G11     98.5           43.8                7.0 +/-    0.63       9.6 +/-    0.63  0.090 / 0.220
G13     312.8          26.4                4.5 +/-    2.81       8.5 +/-    2.81  0.060 / 0.200
G17     203.4          30.7                6.3 +/-    1.71      10.9 +/-    1.71  0.070 / 0.200
G18     85.4           23.3                3.5 +/-    0.78       7.2 +/-    0.78  0.080 / 0.220
G28     294.7          55.7                4.9 +/-    0.94       5.8 +/-    0.94  0.090 / 0.210
G30     356.2          73.8                5.3 +/-    0.57       5.5 +/-    0.57  0.090 / 0.220