PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-04:57:40
G02     46.8           43.1                4.0 +/-    1.40       5.6 +/-    1.40  0.030 / 0.050
G05     97.5           68.7                5.0 +/-    1.01       5.3 +/-    1.01  0.040 / 0.050
G12     190.4          52.6                6.0 +/-    0.48       7.4 +/-    0.48  0.030 / 0.030
G20     207.7          23.7                6.5 +/-    2.08      13.1 +/-    2.08  0.030 / 0.040
G25     272.1          58.0                1.7 +/-    1.35       1.9 +/-    1.35  0.060 / 0.050
G29     317.1          39.1                3.0 +/-    0.86       4.5 +/-    0.86  0.060 / 0.060