PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/19-03:57:50
G05     48.5           16.9                2.9 +/-    0.93       6.9 +/-    0.93  0.040 / 0.070
G10     235.2          11.0              -13.1 +/-   24.10     -35.8 +/-   24.10  0.070 / 0.070
G13     78.2           36.6                6.7 +/-    0.81      10.3 +/-    0.81  0.140 / 0.270
G15     126.7          51.2                7.8 +/-    0.80       9.7 +/-    0.80  0.170 / 0.370
G16     314.9          12.3                3.7 +/-    6.62       9.8 +/-    6.62  0.070 / 0.080
G20     254.3          54.5                8.4 +/-    1.68      10.0 +/-    1.68  0.080 / 0.070
G21     311.2          45.6                7.6 +/-    1.15      10.2 +/-    1.15  0.080 / 0.160
G25     200.8          12.4                5.7 +/-    3.10      15.1 +/-    3.10  0.080 / 0.210
G26     287.7          21.0                6.7 +/-    1.62      14.4 +/-    1.62  0.090 / 0.050
G29     154.7          75.0                6.2 +/-    0.50       6.4 +/-    0.50  0.100 / 0.040