PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/17-04:12:30
G07     357.1          64.9                3.6 +/-    0.67       3.9 +/-    0.67  0.060 / 0.060
G08     74.6           50.3                5.5 +/-    0.54       6.9 +/-    0.54  0.050 / 0.090
G09     177.3          57.4                8.2 +/-    1.10       9.6 +/-    1.10  0.050 / 0.040
G11     136.1          21.7                6.8 +/-    1.01      14.4 +/-    1.01  0.040 / 0.040
G23     159.5          31.4                6.9 +/-    1.51      11.7 +/-    1.51  0.050 / 0.090
G27     46.8           26.2                5.0 +/-    1.30       9.5 +/-    1.30  0.070 / 0.100
G28     246.9          37.0                6.6 +/-    1.44      10.1 +/-    1.44  0.040 / 0.110
G30     310.4          41.9                3.5 +/-    1.82       4.9 +/-    1.82  0.050 / 0.130