PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-07:28:10
G01     122.2          13.9                3.5 +/-    1.97       8.8 +/-    1.97  0.040 / 0.040
G07     68.2           67.8                4.8 +/-    0.46       5.2 +/-    0.46  0.040 / 0.040
G08     48.7           38.1                3.3 +/-    0.56       4.9 +/-    0.56  0.030 / 0.030
G09     176.5          31.1                5.7 +/-    1.64       9.7 +/-    1.64  0.030 / 0.030
G11     116.1          38.5                7.4 +/-    0.84      11.0 +/-    0.84  0.110 / 0.430
G13     319.5          16.1                0.4 +/-    2.37       1.1 +/-    2.37  0.120 / 0.440
G17     200.3          17.1                5.6 +/-    1.50      13.3 +/-    1.50  0.120 / 0.310
G18     99.3           18.5                5.9 +/-    1.65      13.4 +/-    1.65  0.120 / 0.370
G28     273.8          49.1                4.9 +/-    0.84       6.2 +/-    0.84  0.130 / 0.380
G30     334.2          62.3                4.7 +/-    0.88       5.2 +/-    0.88  0.190 / 0.350