PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/12-07:57:50
G10     268.4          38.7                5.8 +/-    1.88       8.6 +/-    1.88  0.300 / 0.490
G13     41.5           17.7                4.3 +/-    2.41      10.0 +/-    2.41  0.370 / 0.380
G15     57.2           46.9                4.4 +/-    0.68       5.8 +/-    0.68  0.230 / 0.280
G16     277.7          11.5                4.5 +/-    2.22      12.2 +/-    2.22  0.300 / 0.220
G20     34.1           57.0                4.7 +/-    0.54       5.5 +/-    0.54  0.130 / 0.230
G21     7.4            72.8                5.3 +/-    0.71       5.5 +/-    0.71  0.110 / 0.230
G24     119.4          14.9                5.9 +/-    1.52      14.6 +/-    1.52  0.030 / 0.040
G27     317.7          20.5                2.8 +/-    3.28       6.1 +/-    3.28  0.040 / 0.040
G29     168.1          29.6                5.8 +/-    1.21      10.1 +/-    1.21  0.040 / 0.040
G32     204.2          11.6               -4.1 +/-   27.55     -10.9 +/-   27.55  0.040 / 0.040