PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/15-08:27:50
G05     49.2           15.3                1.5 +/-    3.01       3.8 +/-    3.01  0.120 / 0.280
G10     236.3          12.0                1.0 +/-   26.25       2.7 +/-   26.25  0.150 / 0.190
G13     76.3           36.8                8.7 +/-    0.99      13.3 +/-    0.99  0.040 / 0.030
G15     121.7          52.4                9.5 +/-    0.83      11.7 +/-    0.83  0.040 / 0.040
G16     314.6          12.1                3.3 +/-    2.70       8.7 +/-    2.70  0.200 / 0.180
G20     3.5            75.0                5.7 +/-    0.53       5.9 +/-    0.53  0.170 / 0.170
G21     314.1          48.0                5.9 +/-    0.79       7.6 +/-    0.79  0.040 / 0.050
G25     200.1          11.1                3.7 +/-    1.25      10.2 +/-    1.25  0.040 / 0.060
G26     286.8          20.6                7.0 +/-    1.36      15.2 +/-    1.36  0.080 / 0.080
G29     155.3          71.4                8.8 +/-    0.96       9.2 +/-    0.96  0.050 / 0.080