PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-08:57:50
G10     267.7          38.3                7.2 +/-    1.36      10.7 +/-    1.36  0.190 / 0.470
G13     41.8           18.3                3.1 +/-    0.80       7.0 +/-    0.80  0.140 / 0.530
G15     57.6           47.2                3.8 +/-    0.34       5.0 +/-    0.34  0.050 / 0.040
G16     278.6          11.7                7.1 +/-    3.71      19.2 +/-    3.71  0.040 / 0.050
G20     42.9           50.4                3.2 +/-    0.52       4.0 +/-    0.52  0.160 / 0.270
G21     7.0            72.6                4.6 +/-    0.85       4.8 +/-    0.85  0.140 / 0.260
G24     120.1          14.5                6.7 +/-    2.07      16.9 +/-    2.07  0.060 / 0.080
G27     317.9          20.1                3.9 +/-    0.96       8.5 +/-    0.96  0.050 / 0.060
G29     167.9          30.0                6.9 +/-    1.03      12.1 +/-    1.03  0.040 / 0.060
G32     204.2          10.9               -4.7 +/-   35.63     -12.8 +/-   35.63  0.040 / 0.060