PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/19-11:28:10
G10     267.4          38.0                5.1 +/-    1.15       7.7 +/-    1.15  0.160 / 0.250
G13     42.0           18.6                1.7 +/-    0.85       3.9 +/-    0.85  0.170 / 0.310
G15     57.6           46.9                3.1 +/-    0.59       4.1 +/-    0.59  0.050 / 0.080
G16     280.0          11.5                4.9 +/-    2.13      13.2 +/-    2.13  0.060 / 0.070
G20     51.6           39.8                3.7 +/-    0.67       5.3 +/-    0.67  0.040 / 0.050
G21     10.9           73.0                5.3 +/-    0.89       5.6 +/-    0.89  0.050 / 0.050
G24     120.6          14.3                5.4 +/-    2.63      13.7 +/-    2.63  0.140 / 0.530
G27     317.9          20.1                4.3 +/-    1.91       9.4 +/-    1.91  0.190 / 0.500
G29     167.4          29.2                5.9 +/-    0.92      10.5 +/-    0.92  0.050 / 0.070
G32     204.4          10.2              -16.8 +/-   19.08     -46.6 +/-   19.08  0.060 / 0.080