PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/31-06:57:40
G01     76.2           32.3                5.3 +/-    0.91       8.8 +/-    0.91  0.040 / 0.040
G07     133.0          36.2                7.9 +/-    0.92      12.2 +/-    0.92  0.040 / 0.040
G11     60.0           37.7                4.2 +/-    0.47       6.4 +/-    0.47  0.050 / 0.090
G13     281.2          39.1                5.3 +/-    1.59       7.9 +/-    1.59  0.050 / 0.100
G15     306.6          14.5                1.6 +/-    1.29       4.0 +/-    1.29  0.070 / 0.130
G17     222.1          62.8                9.5 +/-    0.80      10.5 +/-    0.80  0.070 / 0.110
G19     218.7          38.4                5.8 +/-    1.05       8.7 +/-    1.05  0.050 / 0.090
G28     350.7          61.5                4.5 +/-    0.54       5.0 +/-    0.54  0.050 / 0.080
G30     126.8          71.4                7.7 +/-    0.74       8.1 +/-    0.74  0.040 / 0.060