PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-12:12:30
G10     248.1          24.0                5.3 +/-    1.62      10.6 +/-    1.62  0.100 / 0.380
G13     57.1           32.3                4.0 +/-    1.11       6.7 +/-    1.11  0.080 / 0.330
G15     89.7           56.9                7.2 +/-    0.55       8.4 +/-    0.55  0.040 / 0.030
G16     300.8          14.5                1.5 +/-    1.77       3.7 +/-    1.77  0.030 / 0.040
G20     36.3           55.7                4.8 +/-    0.69       5.7 +/-    0.69  0.040 / 0.040
G21     334.3          60.4                3.3 +/-    0.49       3.8 +/-    0.49  0.030 / 0.040
G26     271.5          16.6                5.6 +/-    2.01      13.3 +/-    2.01  0.040 / 0.050
G29     162.7          50.9                8.0 +/-    0.43      10.0 +/-    0.43  0.040 / 0.040