PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-01:57:50
G10     265.7          38.6                9.8 +/-    1.63      14.6 +/-    1.63  0.170 / 0.300
G13     42.2           18.5                7.8 +/-    3.09      17.9 +/-    3.09  0.160 / 0.230
G15     60.0           49.0                9.1 +/-    0.76      11.7 +/-    0.76  0.070 / 0.090
G16     281.9          12.7                7.3 +/-    1.53      19.2 +/-    1.53  0.070 / 0.090
G20     294.8          59.4                9.1 +/-    0.76      10.4 +/-    0.76  0.040 / 0.030
G21     359.4          70.6                9.4 +/-    0.61       9.9 +/-    0.61  0.050 / 0.050
G24     122.0          13.3                9.4 +/-    2.14      24.3 +/-    2.14  0.140 / 0.290
G27     319.8          16.8                6.9 +/-    3.38      16.5 +/-    3.38  0.190 / 0.280
G29     166.2          31.4                8.7 +/-    0.96      14.8 +/-    0.96  0.360 / 0.430