PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/11-01:27:50
G01     60.3           30.5                4.2 +/-    1.02       7.3 +/-    1.02  0.040 / 0.050
G07     141.6          19.1                5.2 +/-    1.85      11.6 +/-    1.85  0.060 / 0.050
G11     47.5           22.8                2.7 +/-    1.77       5.6 +/-    1.77  0.130 / 0.340
G13     262.3          35.9                5.4 +/-    1.79       8.4 +/-    1.79  0.160 / 0.520
G15     294.2          16.3                5.3 +/-    1.80      12.8 +/-    1.80  0.110 / 0.210
G17     263.3          78.5                6.1 +/-    0.54       6.2 +/-    0.54  0.100 / 0.250
G18     40.0           10.2                2.0 +/-    8.27       5.5 +/-    8.27  0.070 / 0.070
G19     231.5          49.4                6.1 +/-    2.62       7.8 +/-    2.62  0.050 / 0.070
G28     29.7           58.3                6.1 +/-    0.68       7.0 +/-    0.68  0.070 / 0.100
G30     143.6          53.2                6.9 +/-    0.92       8.4 +/-    0.92  0.080 / 0.090