PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-07:42:40
G10     246.7          23.0                7.0 +/-    2.40      14.4 +/-    2.40  0.120 / 0.580
G13     58.6           32.8                5.8 +/-    0.69       9.5 +/-    0.69  0.130 / 0.590
G15     94.3           57.3                7.4 +/-    0.56       8.6 +/-    0.56  0.100 / 0.190
G16     300.5          15.3                2.4 +/-    2.36       5.9 +/-    2.36  0.100 / 0.180
G20     6.0            70.4                5.6 +/-    0.55       5.9 +/-    0.55  0.040 / 0.080
G21     328.8          57.4                5.0 +/-    0.62       5.8 +/-    0.62  0.050 / 0.050
G26     271.5          17.4                4.8 +/-    1.48      11.1 +/-    1.48  0.040 / 0.050
G29     163.3          55.0                9.0 +/-    0.99      10.8 +/-    0.99  0.040 / 0.050