PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/07-16:27:50
G02     83.1           13.3               12.8 +/-    1.62      33.2 +/-    1.62  0.040 / 0.070
G05     44.6           35.7               10.8 +/-    0.78      17.0 +/-    0.78  0.050 / 0.070
G13     102.4          32.9               16.6 +/-    1.27      27.4 +/-    1.27  0.050 / 0.120
G15     144.8          37.0               19.8 +/-    0.88      30.3 +/-    0.88  0.060 / 0.120
G18     230.5          27.2               17.7 +/-    0.84      32.9 +/-    0.84  0.050 / 0.030
G20     316.6          85.0               14.1 +/-    0.41      14.2 +/-    0.41  0.040 / 0.040
G21     297.3          37.7               12.9 +/-    1.09      19.6 +/-    1.09  0.120 / 0.520
G25     208.9          26.4               17.9 +/-    0.74      33.9 +/-    0.74  0.110 / 0.450
G26     310.3          15.5                8.3 +/-    2.07      20.5 +/-    2.07  0.040 / 0.130
G29     84.1           84.7               14.0 +/-    0.85      14.1 +/-    0.85  0.040 / 0.120