PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/07-00:42:40
G01     93.9           30.6                6.4 +/-    0.92      11.0 +/-    0.92  0.070 / 0.110
G07     123.0          44.7                7.8 +/-    0.78      10.6 +/-    0.78  0.060 / 0.090
G11     70.6           40.3               -2.8 +/-    1.09      -4.1 +/-    1.09  0.050 / 0.040
G13     297.9          35.4                5.8 +/-    1.16       9.2 +/-    1.16  0.070 / 0.050
G17     210.9          52.6                8.0 +/-    0.85       9.7 +/-    0.85  0.040 / 0.050
G18     63.2           22.5                5.1 +/-    1.51      10.5 +/-    1.51  0.040 / 0.040
G19     212.8          23.1                7.9 +/-    2.35      16.1 +/-    2.35  0.100 / 0.180
G28     335.5          61.6                4.5 +/-    0.58       5.1 +/-    0.58  0.090 / 0.180
G30     88.8           78.7                6.4 +/-    0.52       6.5 +/-    0.52  0.260 / 0.310