PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-08:27:40
G05     51.2           11.0                3.1 +/-    4.17       8.4 +/-    4.17  0.100 / 0.270
G10     239.9          16.2                4.1 +/-    1.90       9.9 +/-    1.90  0.120 / 0.260
G13     69.3           36.0                5.0 +/-    0.61       7.8 +/-    0.61  0.030 / 0.040
G15     112.3          55.2                7.0 +/-    0.37       8.3 +/-    0.37  0.040 / 0.040
G16     309.6          13.7                2.7 +/-    2.93       7.0 +/-    2.93  0.050 / 0.050
G20     11.0           71.6                4.7 +/-    0.39       4.9 +/-    0.39  0.040 / 0.060
G21     319.5          51.6                3.9 +/-    0.41       4.8 +/-    0.41  0.610 / 0.430
G26     281.1          19.8                4.0 +/-    1.84       8.8 +/-    1.84  0.150 / 0.200
G29     159.0          65.2                7.8 +/-    0.38       8.5 +/-    0.38  0.070 / 0.100