PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-10:13:10
G03     187.5          14.0                3.3 +/-    1.53       8.3 +/-    1.53  0.030 / 0.020
G07     301.3          45.3                4.2 +/-    2.80       5.6 +/-    2.80  0.030 / 0.020
G08     138.6          33.2                5.4 +/-    1.49       8.8 +/-    1.49  0.040 / 0.040
G09     317.4          69.9                4.1 +/-    0.46       4.4 +/-    0.46  0.040 / 0.040
G16     42.1           31.4                2.7 +/-    0.96       4.7 +/-    0.96  0.060 / 0.070
G23     134.4          67.4                5.2 +/-    0.42       5.6 +/-    0.42  0.060 / 0.080
G27     91.1           36.1                4.8 +/-    0.99       7.4 +/-    0.99  0.100 / 0.120
G30     280.2          18.5                7.0 +/-    3.53      16.0 +/-    3.53  0.110 / 0.100