PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-08:42:40
G10     243.4          19.8                5.3 +/-    3.21      11.7 +/-    3.21  0.120 / 0.290
G13     63.4           34.6                5.8 +/-    0.82       9.2 +/-    0.82  0.120 / 0.320
G15     102.7          56.7                6.0 +/-    0.82       7.0 +/-    0.82  0.060 / 0.040
G16     305.1          14.7                1.6 +/-    2.40       4.1 +/-    2.40  0.060 / 0.040
G20     20.6           67.0                3.9 +/-    0.55       4.2 +/-    0.55  0.040 / 0.050
G21     324.6          54.9                4.3 +/-    0.40       5.2 +/-    0.40  0.040 / 0.050
G26     276.1          18.7                4.8 +/-    1.36      10.8 +/-    1.36  0.080 / 0.110
G29     161.4          59.5                7.1 +/-    0.30       8.1 +/-    0.30  0.080 / 0.120