PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/19-15:13:10
G05     47.0           23.1                6.2 +/-    1.44      12.6 +/-    1.44  0.190 / 0.430
G13     81.4           36.1               10.9 +/-    0.79      17.0 +/-    0.79  0.260 / 0.620
G15     134.2          48.7               11.0 +/-    1.15      14.1 +/-    1.15  0.070 / 0.090
G20     244.1          33.4                7.6 +/-    2.14      12.5 +/-    2.14  0.070 / 0.080
G21     310.7          45.7                8.7 +/-    1.18      11.6 +/-    1.18  0.050 / 0.210
G25     197.8          12.3               10.1 +/-    5.09      26.8 +/-    5.09  0.120 / 0.150
G26     293.8          19.8                6.5 +/-    0.67      14.4 +/-    0.67  0.050 / 0.070
G29     148.4          76.8               10.8 +/-    0.50      11.1 +/-    0.50  0.060 / 0.090