PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-09:42:50
G01     56.6           28.6                2.6 +/-    0.85       4.7 +/-    0.85  0.040 / 0.040
G07     142.6          19.3                5.6 +/-    1.36      12.5 +/-    1.36  0.030 / 0.040
G11     47.7           24.3                3.5 +/-    0.73       7.0 +/-    0.73  0.130 / 0.210
G13     258.7          35.5                5.5 +/-    0.84       8.6 +/-    0.84  0.070 / 0.270
G15     291.9          16.3                2.6 +/-    1.69       6.3 +/-    1.69  0.070 / 0.160
G17     260.6          76.4                5.9 +/-    0.34       6.0 +/-    0.34  0.070 / 0.140
G18     40.5           11.3                2.8 +/-    2.10       7.7 +/-    2.10  0.200 / 0.390
G19     234.1          54.6                6.0 +/-    1.11       7.1 +/-    1.11  0.220 / 0.420
G28     25.8           59.6                3.9 +/-    0.68       4.4 +/-    0.68  0.050 / 0.090
G30     145.7          52.6                5.8 +/-    0.72       7.0 +/-    0.72  0.050 / 0.100