PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/19-22:28:10
G03     229.4          66.0                8.9 +/-    1.17       9.6 +/-    1.17  0.080 / 0.390
G07     250.8          11.6                7.1 +/-    3.33      19.2 +/-    3.33  0.110 / 0.610
G09     306.2          22.9                6.4 +/-    2.51      13.2 +/-    2.51  0.040 / 0.040
G14     102.8          11.3                9.8 +/-    2.42      26.6 +/-    2.42  0.050 / 0.050
G16     121.3          61.1               11.2 +/-    1.07      12.7 +/-    1.07  0.140 / 0.520
G22     193.6          51.6                9.6 +/-    0.68      11.9 +/-    0.68  0.110 / 0.540
G23     320.5          50.2                7.4 +/-    1.09       9.4 +/-    1.09  0.040 / 0.060
G26     66.4           51.6                7.8 +/-    0.34       9.7 +/-    0.34  0.040 / 0.060
G31     53.1           20.2                5.0 +/-    1.61      10.8 +/-    1.61  0.050 / 0.070