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                3.8 +/-    1.15       6.6 +/-    1.15  0.110 / 0.150
G07     140.3          23.3                5.5 +/-    2.85      11.2 +/-    2.85  0.100 / 0.130
G11     50.0           27.7                1.5 +/-    2.17       2.7 +/-    2.17  0.030 / 0.030
G13     265.0          37.2                7.1 +/-    1.59      10.8 +/-    1.59  0.030 / 0.030
G15     297.9          15.5                2.5 +/-    2.07       6.0 +/-    2.07  0.110 / 0.140
G17     243.1          71.9                5.6 +/-    0.46       5.9 +/-    0.46  0.120 / 0.120
G18     43.7           14.5                1.5 +/-    2.35       3.9 +/-    2.35  0.080 / 0.230
G19     228.7          49.8                5.8 +/-    2.58       7.3 +/-    2.58  0.080 / 0.230
G28     17.2           60.4                3.8 +/-    1.50       4.3 +/-    1.50  0.150 / 0.340
G30     141.8          56.9                5.7 +/-    0.84       6.6 +/-    0.84  0.110 / 0.390