PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/11-17:27:50
G08     293.3          23.8                7.6 +/-    1.41      15.3 +/-    1.41  0.060 / 0.080
G10     4.6            62.8                8.0 +/-    0.42       8.9 +/-    0.42  0.040 / 0.100
G14     228.0          45.3               11.4 +/-    1.01      15.4 +/-    1.01  0.040 / 0.030
G18     317.4          10.8               -5.4 +/-   25.48     -14.8 +/-   25.48  0.050 / 0.040
G20     62.8           53.2                8.6 +/-    0.78      10.5 +/-    0.78  0.090 / 0.080
G21     145.1          39.3               12.5 +/-    0.88      18.4 +/-    0.88  0.070 / 0.080
G24     54.3           23.3                9.2 +/-    0.59      18.7 +/-    0.59  0.090 / 0.120
G27     259.4          32.6                8.8 +/-    1.87      14.5 +/-    1.87  0.090 / 0.130
G32     241.5          65.4               10.7 +/-    0.86      11.7 +/-    0.86  0.070 / 0.110