PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/04-05:57:30
G01     67.0           32.3                5.4 +/-    1.27       9.0 +/-    1.27  0.070 / 0.110
G07     139.0          26.1                8.0 +/-    1.70      15.2 +/-    1.70  0.100 / 0.100
G11     50.5           27.1                3.3 +/-    2.28       6.1 +/-    2.28  0.050 / 0.130
G13     269.8          37.4                6.3 +/-    3.45       9.5 +/-    3.45  0.050 / 0.120
G15     301.3          14.9               -0.1 +/-    2.06      -0.1 +/-    2.06  0.040 / 0.030
G17     242.4          74.8                8.3 +/-    0.33       8.6 +/-    0.33  0.050 / 0.030
G19     226.2          42.5                6.6 +/-    2.16       9.2 +/-    2.16  0.030 / 0.020
G28     21.5           59.3                6.1 +/-    1.54       7.0 +/-    1.54  0.030 / 0.020
G30     139.0          60.3                7.9 +/-    0.53       8.9 +/-    0.53  0.040 / 0.040