PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/19-08:12:50
G01     122.7          13.6                4.3 +/-    2.30      11.0 +/-    2.30  0.040 / 0.030
G07     67.6           67.8                6.2 +/-    0.35       6.6 +/-    0.35  0.040 / 0.030
G08     49.3           39.0                3.4 +/-    1.06       5.1 +/-    1.06  0.030 / 0.030
G09     176.8          31.9                9.2 +/-    1.26      15.4 +/-    1.26  0.030 / 0.040
G11     116.2          38.2                7.6 +/-    0.95      11.4 +/-    0.95  0.120 / 0.160
G13     319.6          15.7                0.6 +/-    2.13       1.3 +/-    2.13  0.090 / 0.140
G17     200.4          16.2                5.2 +/-    2.05      12.6 +/-    2.05  0.110 / 0.460
G18     99.7           18.3                6.2 +/-    1.34      14.1 +/-    1.34  0.110 / 0.440
G28     273.4          49.1                6.8 +/-    1.14       8.7 +/-    1.14  0.060 / 0.100
G30     334.3          62.3                5.0 +/-    0.96       5.5 +/-    0.96  0.050 / 0.090