PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-09:12:30
G10     286.7          47.7                5.2 +/-    0.61       6.8 +/-    0.61  0.070 / 0.090
G15     47.7           33.8                3.4 +/-    0.79       5.5 +/-    0.79  0.060 / 0.090
G20     55.4           41.2                5.8 +/-    0.85       8.3 +/-    0.85  0.060 / 0.080
G21     69.1           76.7                5.9 +/-    0.39       6.1 +/-    0.39  0.080 / 0.100
G24     105.6          23.3                6.3 +/-    1.46      12.9 +/-    1.46  0.040 / 0.040
G27     307.1          31.0                5.0 +/-    2.36       8.6 +/-    2.36  0.040 / 0.050
G29     168.4          14.1                5.7 +/-    4.28      14.4 +/-    4.28  0.040 / 0.050
G32     207.7          26.1                4.8 +/-    1.50       9.2 +/-    1.50  0.040 / 0.050