PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/14-04:42:50
G07     325.2          54.9                3.4 +/-    1.13       4.0 +/-    1.13  0.150 / 0.220
G08     107.9          49.4                6.3 +/-    0.69       8.0 +/-    0.69  0.090 / 0.230
G09     207.2          80.0                5.8 +/-    0.57       5.9 +/-    0.57  0.030 / 0.050
G16     44.2           17.7               -3.0 +/-    0.58      -7.0 +/-    0.58  0.040 / 0.040
G23     153.4          50.1                7.6 +/-    1.04       9.6 +/-    1.04  0.040 / 0.050
G27     60.7           33.8                4.4 +/-    0.59       7.1 +/-    0.59  0.040 / 0.060
G28     232.8          25.0                4.3 +/-    2.14       8.3 +/-    2.14  0.110 / 0.240
G30     297.0          31.1                3.0 +/-    1.13       5.1 +/-    1.13  0.100 / 0.260