PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-03:42:30
G07     341.9          61.1                4.6 +/-    0.54       5.2 +/-    0.54  0.090 / 0.070
G08     88.2           51.4                6.5 +/-    0.55       8.1 +/-    0.55  0.090 / 0.080
G09     179.7          66.6                5.5 +/-    0.96       5.9 +/-    0.96  0.030 / 0.030
G11     141.8          16.4                7.1 +/-    1.72      17.1 +/-    1.72  0.040 / 0.040
G23     157.6          39.9                6.9 +/-    0.82      10.0 +/-    0.82  0.080 / 0.090
G27     53.3           31.3               12.4 +/-    1.19      21.2 +/-    1.19  0.080 / 0.080
G28     239.6          30.8                6.8 +/-    1.08      11.7 +/-    1.08  0.080 / 0.180
G30     303.9          36.2                4.3 +/-    1.37       6.7 +/-    1.37  0.120 / 0.150