PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/11-18:57:50
G07     339.2          60.1               13.3 +/-    0.30      15.1 +/-    0.30  0.050 / 0.060
G08     98.1           54.0               13.6 +/-    1.07      16.4 +/-    1.07  0.080 / 0.050
G09     188.1          69.3               14.3 +/-    0.25      15.1 +/-    0.25  0.060 / 0.120
G11     144.4          15.5               17.8 +/-    3.77      43.8 +/-    3.77  0.090 / 0.100
G23     155.6          32.9               14.7 +/-    2.19      24.2 +/-    2.19  0.060 / 0.100
G27     50.5           28.7               11.6 +/-    2.42      20.9 +/-    2.42  0.090 / 0.080
G28     241.5          33.6               13.7 +/-    1.19      22.3 +/-    1.19  0.030 / 0.040
G30     307.1          40.0               12.6 +/-    1.20      18.4 +/-    1.20  0.030 / 0.040