PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/09-06:57:30
G10     262.3          36.2                8.7 +/-    1.42      13.5 +/-    1.42  0.030 / 0.030
G13     44.1           21.1                4.6 +/-    1.78       9.9 +/-    1.78  0.040 / 0.040
G15     63.6           51.0                4.0 +/-    0.82       5.0 +/-    0.82  0.150 / 0.280
G16     288.1          12.8                4.0 +/-    1.36      10.5 +/-    1.36  0.130 / 0.280
G20     289.5          58.2                5.8 +/-    1.17       6.7 +/-    1.17  0.090 / 0.230
G21     359.0          69.8                4.2 +/-    0.59       4.5 +/-    0.59  0.100 / 0.170
G24     123.2          11.6                6.1 +/-    2.87      16.4 +/-    2.87  0.080 / 0.070
G27     321.2          13.6                1.4 +/-    2.04       3.7 +/-    2.04  0.120 / 0.090
G29     164.4          31.7                5.8 +/-    1.05       9.9 +/-    1.05  0.120 / 0.210