PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/26-18:28:10
G07     323.6          55.2                9.7 +/-    0.54      11.5 +/-    0.54  0.040 / 0.050
G08     115.3          46.6               11.8 +/-    0.85      15.6 +/-    0.85  0.040 / 0.040
G09     253.8          82.9               10.0 +/-    0.89      10.1 +/-    0.89  0.040 / 0.030
G16     43.1           21.1                7.2 +/-    2.02      15.4 +/-    2.02  0.030 / 0.030
G23     150.6          55.4               11.2 +/-    0.60      13.2 +/-    0.60  0.060 / 0.070
G27     70.5           37.3                9.3 +/-    1.20      14.2 +/-    1.20  0.060 / 0.060
G28     228.2          16.1               13.7 +/-    2.86      33.3 +/-    2.86  0.200 / 0.500
G30     292.9          28.1               10.4 +/-    1.10      18.9 +/-    1.10  0.180 / 0.410