PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/06-12:42:50
G07     324.3          54.5                5.4 +/-    0.69       6.5 +/-    0.69  0.040 / 0.060
G08     108.9          49.8                7.9 +/-    0.83       9.9 +/-    0.83  0.040 / 0.060
G09     198.6          78.7                6.2 +/-    0.53       6.3 +/-    0.53  0.110 / 0.110
G16     45.3           9.9                 4.8 +/-    1.42      13.4 +/-    1.42  0.100 / 0.100
G23     152.7          46.3                7.8 +/-    0.95      10.3 +/-    0.95  0.250 / 0.370
G27     61.3           34.5                6.5 +/-    1.06      10.4 +/-    1.06  0.100 / 0.360
G28     232.8          24.6                9.2 +/-    2.51      18.1 +/-    2.51  0.050 / 0.070
G30     296.9          30.7                7.3 +/-    1.71      12.7 +/-    1.71  0.040 / 0.060