PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-12:57:30
G01     318.3          19.7                5.0 +/-    1.94      11.0 +/-    1.94  0.040 / 0.060
G08     259.5          12.0                5.7 +/-    1.93      15.1 +/-    1.93  0.040 / 0.060
G10     83.0           52.2                3.1 +/-    0.61       3.8 +/-    0.61  0.040 / 0.080
G11     303.2          22.4                3.9 +/-    1.65       8.1 +/-    1.65  0.040 / 0.080
G14     296.9          69.6                4.0 +/-    0.71       4.3 +/-    0.71  0.170 / 0.260
G18     105.0          24.7               16.6 +/-    2.19      32.7 +/-    2.19  0.170 / 0.330
G22     302.6          15.0                2.8 +/-    2.32       6.9 +/-    2.32  0.120 / 0.310
G31     174.1          45.9                6.4 +/-    1.23       8.5 +/-    1.23  0.140 / 0.390
G32     14.3           64.9                3.2 +/-    0.46       3.5 +/-    0.46  0.130 / 0.330