PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-06:42:40
G10     257.4          33.0                6.7 +/-    1.75      11.0 +/-    1.75  0.080 / 0.090
G13     47.2           24.5                5.0 +/-    1.26       9.9 +/-    1.26  0.050 / 0.080
G15     70.6           53.9                5.8 +/-    0.61       7.0 +/-    0.61  0.040 / 0.040
G16     292.8          13.6                3.2 +/-    1.59       8.1 +/-    1.59  0.050 / 0.040
G20     281.3          55.6                5.3 +/-    1.91       6.3 +/-    1.91  0.140 / 0.350
G21     349.3          66.7                4.3 +/-    1.18       4.6 +/-    1.18  0.160 / 0.390
G26     264.4          12.2                5.6 +/-    6.04      15.0 +/-    6.04  0.070 / 0.140
G29     163.4          36.9                6.4 +/-    0.98       9.8 +/-    0.98  0.100 / 0.120