PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-08:28:10
G10     258.2          32.2                6.2 +/-    1.88      10.3 +/-    1.88  0.090 / 0.230
G13     47.1           25.1                4.5 +/-    1.91       8.7 +/-    1.91  0.140 / 0.180
G15     69.4           53.4                4.7 +/-    0.37       5.7 +/-    0.37  0.120 / 0.170
G16     287.5          14.2                3.8 +/-    1.11       9.7 +/-    1.11  0.100 / 0.250
G20     31.7           58.6                3.3 +/-    0.76       3.8 +/-    0.76  0.040 / 0.030
G21     347.1          66.6                3.6 +/-    0.58       3.8 +/-    0.58  0.030 / 0.040
G26     259.3          11.9                5.9 +/-    4.36      15.7 +/-    4.36  0.030 / 0.030
G27     321.4          12.6                1.2 +/-    4.20       3.3 +/-    4.20  0.040 / 0.030
G29     166.6          40.0                5.0 +/-    0.53       7.2 +/-    0.53  0.050 / 0.050