PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/29-08:57:40
G10     269.7          39.4                7.1 +/-    1.52      10.4 +/-    1.52  0.130 / 0.530
G13     41.0           16.8                2.7 +/-    1.31       6.5 +/-    1.31  0.110 / 0.530
G15     55.9           45.8                4.2 +/-    0.64       5.6 +/-    0.64  0.100 / 0.170
G16     276.9          11.0                5.2 +/-    2.89      14.2 +/-    2.89  0.080 / 0.170
G20     44.2           49.5                4.8 +/-    0.69       6.0 +/-    0.69  0.040 / 0.060
G21     12.1           73.7                4.8 +/-    0.61       4.9 +/-    0.61  0.040 / 0.050
G24     118.6          15.6                5.8 +/-    1.66      14.1 +/-    1.66  0.050 / 0.070
G27     317.0          21.5                2.9 +/-    4.49       6.2 +/-    4.49  0.060 / 0.070
G29     168.1          28.1                7.5 +/-    1.17      13.7 +/-    1.17  0.040 / 0.050
G32     204.4          12.6                3.9 +/-    3.68      10.3 +/-    3.68  0.040 / 0.050