PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/29-06:57:40
G10     273.2          41.5                7.1 +/-    1.36      10.1 +/-    1.36  0.140 / 0.100
G13     39.8           14.2                4.1 +/-    3.67      10.3 +/-    3.67  0.130 / 0.120
G15     53.7           43.8                5.6 +/-    0.59       7.6 +/-    0.59  0.050 / 0.050
G20     25.3           61.3                5.9 +/-    0.71       6.7 +/-    0.71  0.040 / 0.050
G21     19.0           75.0                5.9 +/-    0.71       6.1 +/-    0.71  0.040 / 0.040
G24     115.5          17.4                8.0 +/-    1.52      18.6 +/-    1.52  0.040 / 0.040
G27     315.4          23.6                4.4 +/-    1.54       8.9 +/-    1.54  0.100 / 0.200
G29     168.6          25.5                5.2 +/-    1.08      10.0 +/-    1.08  0.090 / 0.150
G32     204.9          15.8                6.0 +/-    1.90      14.7 +/-    1.90  0.110 / 0.140