PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/28-22:58:10
G03     220.5          62.5               11.7 +/-    1.34      13.0 +/-    1.34  0.040 / 0.050
G07     253.1          12.1                6.1 +/-   14.73      16.1 +/-   14.73  0.050 / 0.050
G09     307.5          23.4                8.8 +/-    2.74      17.8 +/-    2.74  0.090 / 0.250
G14     105.8          9.4                11.1 +/-    1.71      31.4 +/-    1.71  0.130 / 0.160
G16     117.1          63.9               11.4 +/-    0.56      12.5 +/-    0.56  0.030 / 0.030
G22     191.1          47.8               12.0 +/-    1.15      15.5 +/-    1.15  0.040 / 0.040
G23     325.1          55.0                9.0 +/-    0.79      10.8 +/-    0.79  0.270 / 0.450
G26     60.0           48.4                8.5 +/-    0.68      10.9 +/-    0.68  0.240 / 0.410
G31     55.9           15.1                6.9 +/-    2.66      17.2 +/-    2.66  0.080 / 0.130