PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/16-09:27:50
G10     258.9          32.7                5.0 +/-    1.72       8.3 +/-    1.72  0.110 / 0.330
G13     46.6           24.6                3.2 +/-    2.20       6.4 +/-    2.20  0.140 / 0.340
G15     68.0           52.8                4.5 +/-    0.70       5.5 +/-    0.70  0.030 / 0.040
G16     287.1          14.0                4.5 +/-    1.07      11.5 +/-    1.07  0.030 / 0.040
G20     41.1           51.1                3.4 +/-    0.78       4.2 +/-    0.78  0.100 / 0.290
G21     349.4          67.4                3.3 +/-    1.01       3.5 +/-    1.01  0.110 / 0.220
G26     258.9          11.5                5.4 +/-    4.30      14.7 +/-    4.30  0.080 / 0.090
G27     321.2          13.3                1.1 +/-    1.64       2.8 +/-    1.64  0.110 / 0.100
G29     166.6          38.8                6.2 +/-    0.93       9.3 +/-    0.93  0.050 / 0.050