PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-12:58:00
G10     93.4           47.7                4.4 +/-    0.89       5.8 +/-    0.89  0.040 / 0.050
G11     296.0          25.2                4.0 +/-    0.82       7.8 +/-    0.82  0.050 / 0.050
G14     319.1          70.1                4.0 +/-    0.47       4.2 +/-    0.47  0.050 / 0.100
G18     294.8          45.5                7.6 +/-    7.06      10.2 +/-    7.06  0.080 / 0.090
G22     306.2          20.7                2.8 +/-    0.89       6.1 +/-    0.89  0.100 / 0.260
G25     93.5           12.8                5.4 +/-    1.93      14.2 +/-    1.93  0.110 / 0.270
G31     171.3          54.3                7.5 +/-    0.67       9.0 +/-    0.67  0.130 / 0.240
G32     25.2           59.4                4.5 +/-    0.79       5.2 +/-    0.79  0.120 / 0.240