PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-09:42:40
G10     291.9          50.4                5.3 +/-    0.84       6.6 +/-    0.84  0.040 / 0.040
G15     46.8           31.1                3.3 +/-    0.87       5.7 +/-    0.87  0.040 / 0.050
G20     342.7          65.3                3.1 +/-    0.91       3.4 +/-    0.91  0.060 / 0.110
G21     89.6           73.3                5.4 +/-    1.03       5.6 +/-    1.03  0.060 / 0.080
G24     100.2          24.6                5.4 +/-    0.88      10.7 +/-    0.88  0.040 / 0.040
G27     306.7          30.7                4.0 +/-    1.08       6.8 +/-    1.08  0.040 / 0.040
G32     209.6          23.8                6.6 +/-    1.68      13.4 +/-    1.68  0.050 / 0.110