PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-09:42:50
G10     260.1          33.5                4.6 +/-    1.88       7.5 +/-    1.88  0.180 / 0.250
G13     45.8           23.8                2.8 +/-    2.71       5.7 +/-    2.71  0.130 / 0.220
G15     66.2           52.1                5.6 +/-    0.90       6.9 +/-    0.90  0.120 / 0.390
G16     286.1          13.7                5.5 +/-    1.17      14.1 +/-    1.17  0.100 / 0.330
G20     43.6           48.6                3.9 +/-    0.85       5.0 +/-    0.85  0.050 / 0.060
G21     351.8          68.3                5.2 +/-    0.46       5.5 +/-    0.46  0.050 / 0.070
G24     126.2          10.2               -8.9 +/-   28.16     -24.9 +/-   28.16  0.040 / 0.040
G26     257.9          11.0                5.6 +/-    1.42      15.3 +/-    1.42  0.040 / 0.040
G27     320.8          14.3                1.9 +/-    2.15       4.9 +/-    2.15  0.070 / 0.120
G29     166.7          37.4                7.3 +/-    1.28      11.0 +/-    1.28  0.110 / 0.130