PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/09-10:57:40
G01     62.1           30.6                1.9 +/-    0.82       3.4 +/-    0.82  0.110 / 0.190
G07     140.3          23.3                4.9 +/-    1.82      10.0 +/-    1.82  0.070 / 0.190
G11     50.0           27.7                0.8 +/-    0.71       1.5 +/-    0.71  0.040 / 0.060
G13     265.0          37.2                6.2 +/-    1.94       9.4 +/-    1.94  0.040 / 0.060
G15     297.9          15.5                2.0 +/-    1.90       4.9 +/-    1.90  0.030 / 0.040
G17     243.1          71.9                5.8 +/-    0.86       6.1 +/-    0.86  0.030 / 0.040
G18     43.7           14.5                1.6 +/-    3.09       3.9 +/-    3.09  0.040 / 0.070
G19     228.7          49.8                5.6 +/-    0.86       7.0 +/-    0.86  0.040 / 0.060
G28     17.2           60.4                3.6 +/-    0.46       4.0 +/-    0.46  0.070 / 0.140
G30     141.8          56.9                5.7 +/-    0.69       6.6 +/-    0.69  0.080 / 0.110