PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/09-01:57:50
G07     323.6          54.7                6.1 +/-    1.12       7.3 +/-    1.12  0.040 / 0.050
G08     108.8          48.3                9.7 +/-    1.13      12.5 +/-    1.13  0.040 / 0.060
G09     201.4          80.8                7.2 +/-    0.92       7.2 +/-    0.92  0.080 / 0.130
G16     44.2           14.7                2.6 +/-    2.34       6.6 +/-    2.34  0.080 / 0.150
G23     152.9          53.4                8.4 +/-    0.47      10.2 +/-    0.47  0.040 / 0.040
G27     67.0           36.9                5.9 +/-    0.51       9.1 +/-    0.51  0.030 / 0.050
G28     230.4          20.4                6.8 +/-    1.28      14.7 +/-    1.28  0.140 / 0.400
G30     294.2          28.2                2.8 +/-    1.86       5.1 +/-    1.86  0.120 / 0.310