PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/15-09:12:30
G10     251.2          26.8                6.6 +/-    2.07      12.3 +/-    2.07  0.120 / 0.470
G13     53.4           30.1                5.0 +/-    1.91       8.7 +/-    1.91  0.080 / 0.390
G15     82.8           56.5                6.5 +/-    0.75       7.6 +/-    0.75  0.050 / 0.050
G16     295.6          15.1                4.0 +/-    2.82      10.0 +/-    2.82  0.060 / 0.040
G20     33.7           57.7                4.9 +/-    0.64       5.7 +/-    0.64  0.030 / 0.050
G21     336.4          61.6                5.5 +/-    0.72       6.2 +/-    0.72  0.030 / 0.040
G26     266.7          15.3                6.3 +/-    2.00      15.7 +/-    2.00  0.110 / 0.130
G29     164.7          48.3               10.1 +/-    0.68      13.1 +/-    0.68  0.080 / 0.110