PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-03:42:40
G02     84.5           12.4                4.6 +/-    2.13      12.1 +/-    2.13  0.060 / 0.110
G05     44.9           30.6                4.3 +/-    1.08       7.5 +/-    1.08  0.060 / 0.110
G13     98.5           33.5                8.6 +/-    0.64      14.0 +/-    0.64  0.080 / 0.180
G15     144.2          38.6                9.5 +/-    0.75      14.2 +/-    0.75  0.070 / 0.160
G20     237.5          44.5               10.3 +/-    1.83      14.0 +/-    1.83  0.160 / 0.390
G21     297.1          35.7                8.7 +/-    1.10      13.7 +/-    1.10  0.170 / 0.340
G25     209.4          25.7                7.2 +/-    1.10      13.8 +/-    1.10  0.050 / 0.120
G26     303.8          19.3                7.7 +/-    1.14      17.3 +/-    1.14  0.050 / 0.090
G29     12.4           85.9                6.8 +/-    0.37       6.8 +/-    0.37  0.070 / 0.110