PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/04-09:58:00
G10     278.8          45.0                4.1 +/-    1.28       5.5 +/-    1.28  0.140 / 0.590
G13     38.1           9.9                -0.1 +/-    2.06      -0.2 +/-    2.06  0.070 / 0.450
G15     50.7           39.9                2.6 +/-    1.06       3.7 +/-    1.06  0.070 / 0.050
G20     319.2          63.9                3.8 +/-    1.07       4.2 +/-    1.07  0.050 / 0.060
G21     53.3           75.6                3.4 +/-    0.87       3.5 +/-    0.87  0.170 / 0.310
G24     109.7          20.0                4.8 +/-    0.92      10.5 +/-    0.92  0.160 / 0.170
G27     314.4          24.4                2.5 +/-    1.28       5.0 +/-    1.28  0.040 / 0.040
G29     166.0          16.8                3.9 +/-    0.86       9.3 +/-    0.86  0.090 / 0.050
G32     206.8          14.9                3.8 +/-    1.61       9.4 +/-    1.61  0.030 / 0.030