PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/19-06:57:50
G01     67.8           32.5                4.9 +/-    1.38       8.2 +/-    1.38  0.080 / 0.100
G07     138.7          27.0                8.5 +/-    1.28      16.0 +/-    1.28  0.080 / 0.110
G11     50.9           27.6                2.3 +/-    1.92       4.3 +/-    1.92  0.070 / 0.050
G13     270.7          37.5                5.1 +/-    3.73       7.8 +/-    3.73  0.050 / 0.050
G15     302.4          14.5                0.8 +/-    2.04       1.9 +/-    2.04  0.060 / 0.100
G17     240.5          74.1                7.5 +/-    0.16       7.8 +/-    0.16  0.080 / 0.120
G19     225.7          41.5                6.9 +/-    2.02       9.7 +/-    2.02  0.040 / 0.030
G28     20.8           59.4                4.9 +/-    1.13       5.6 +/-    1.13  0.040 / 0.030
G30     138.4          61.1                7.4 +/-    0.36       8.3 +/-    0.36  0.100 / 0.080