PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/15-09:27:50
G01     97.6           28.5                5.6 +/-    0.76      10.0 +/-    0.76  0.030 / 0.050
G07     117.4          50.5                7.7 +/-    0.96       9.6 +/-    0.96  0.030 / 0.050
G08     41.8           16.6                3.3 +/-    3.22       8.0 +/-    3.22  0.050 / 0.070
G11     79.8           43.9                7.1 +/-    1.43       9.8 +/-    1.43  0.050 / 0.080
G13     302.3          34.1                3.9 +/-    1.19       6.4 +/-    1.19  0.100 / 0.150
G17     208.8          42.9                6.2 +/-    0.89       8.7 +/-    0.89  0.110 / 0.150
G18     71.5           24.6                6.1 +/-    1.04      12.0 +/-    1.04  0.090 / 0.180
G19     210.2          21.6                3.9 +/-    1.51       8.3 +/-    1.51  0.110 / 0.200
G28     317.8          59.8                4.1 +/-    0.83       4.7 +/-    0.83  0.050 / 0.070
G30     56.0           80.6                5.6 +/-    1.16       5.6 +/-    1.16  0.040 / 0.060