PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-05:43:00
G10     255.6          30.4                6.2 +/-    2.00      10.7 +/-    2.00  0.190 / 0.640
G13     49.0           26.8                4.8 +/-    3.13       9.1 +/-    3.13  0.120 / 0.520
G15     75.1           55.5                6.8 +/-    0.91       8.1 +/-    0.91  0.050 / 0.040
G16     289.5          15.0                1.2 +/-    2.05       2.9 +/-    2.05  0.060 / 0.040
G20     330.5          70.6                5.3 +/-    0.50       5.6 +/-    0.50  0.050 / 0.050
G21     340.9          64.0                5.4 +/-    0.65       5.9 +/-    0.65  0.040 / 0.040
G26     261.3          13.2                3.5 +/-    2.98       9.1 +/-    2.98  0.110 / 0.120
G29     166.4          44.0                6.6 +/-    0.93       9.0 +/-    0.93  0.100 / 0.150