PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-13:42:50
G02     32.9           56.0                4.8 +/-    1.01       5.7 +/-    1.01  0.030 / 0.030
G05     145.3          60.0                7.5 +/-    0.53       8.5 +/-    0.53  0.030 / 0.020
G06     52.0           20.4                3.9 +/-    3.64       8.6 +/-    3.64  0.370 / 0.200
G12     205.8          70.4                5.7 +/-    0.74       6.0 +/-    0.74  0.320 / 0.350
G19     99.5           9.6                 9.0 +/-    2.44      25.5 +/-    2.44  0.030 / 0.020
G20     198.8          23.4                6.3 +/-    2.31      12.8 +/-    2.31  0.020 / 0.020
G25     298.4          53.3                5.7 +/-    1.37       6.9 +/-    1.37  0.040 / 0.060
G29     309.0          31.7                4.3 +/-    1.05       7.2 +/-    1.05  0.050 / 0.050