PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/18-08:28:00
G10     262.2          36.1                5.2 +/-    1.23       8.1 +/-    1.23  0.030 / 0.040
G13     44.1           21.2                4.2 +/-    2.53       8.9 +/-    2.53  0.040 / 0.040
G15     63.9           51.2                4.2 +/-    1.17       5.2 +/-    1.17  0.080 / 0.190
G16     289.3          12.6                2.1 +/-    1.78       5.6 +/-    1.78  0.120 / 0.210
G20     289.5          58.2                4.8 +/-    1.32       5.6 +/-    1.32  0.070 / 0.090
G21     1.7            70.3                4.2 +/-    0.88       4.4 +/-    0.88  0.070 / 0.070
G24     122.7          11.7                5.8 +/-    2.71      15.7 +/-    2.71  0.100 / 0.240
G27     321.3          13.3                0.8 +/-    1.67       2.1 +/-    1.67  0.110 / 0.230
G29     164.1          31.0                5.2 +/-    1.36       9.0 +/-    1.36  0.250 / 0.380