PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/29-08:12:40
G10     277.4          44.5                5.6 +/-    1.06       7.5 +/-    1.06  0.040 / 0.030
G13     38.4           10.8                1.0 +/-    6.99       2.8 +/-    6.99  0.040 / 0.040
G15     51.3           40.6                3.9 +/-    0.83       5.7 +/-    0.83  0.200 / 0.600
G20     316.6          63.6                5.4 +/-    1.27       5.9 +/-    1.27  0.120 / 0.790
G21     43.1           75.9                5.6 +/-    0.88       5.8 +/-    0.88  0.090 / 0.340
G24     111.4          19.3                6.6 +/-    0.92      14.8 +/-    0.92  0.090 / 0.580
G27     315.0          23.8                3.0 +/-    1.15       6.0 +/-    1.15  0.070 / 0.050
G29     165.6          17.5                4.3 +/-    1.44      10.1 +/-    1.44  0.090 / 0.060
G32     206.8          12.8                3.6 +/-    2.84       9.6 +/-    2.84  0.100 / 0.120