PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-19:58:10
G07     339.0          60.1               14.5 +/-    0.64      16.5 +/-    0.64  0.070 / 0.090
G08     98.1           54.0               15.3 +/-    0.99      18.4 +/-    0.99  0.070 / 0.090
G09     188.6          69.6               14.8 +/-    0.55      15.6 +/-    0.55  0.040 / 0.030
G11     144.9          15.3               21.3 +/-    3.48      52.7 +/-    3.48  0.030 / 0.030
G23     155.8          33.9               17.0 +/-    1.86      27.5 +/-    1.86  0.060 / 0.150
G27     50.6           28.7               11.3 +/-    0.79      20.3 +/-    0.79  0.070 / 0.160
G28     241.3          33.6               17.5 +/-    1.50      28.6 +/-    1.50  0.180 / 0.430
G30     307.3          40.3               12.0 +/-    0.75      17.4 +/-    0.75  0.160 / 0.370