PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-18:27:50
G01     307.2          33.6               14.6 +/-    1.23      23.8 +/-    1.23  0.090 / 0.140
G10     106.2          39.2               15.3 +/-    0.62      22.6 +/-    0.62  0.070 / 0.170
G11     280.1          28.4               13.9 +/-    1.30      25.3 +/-    1.30  0.080 / 0.160
G14     359.0          66.7               13.2 +/-    0.99      14.2 +/-    0.99  0.060 / 0.170
G18     271.8          51.6               16.2 +/-    0.89      20.1 +/-    0.89  0.030 / 0.050
G20     120.6          13.9               15.7 +/-    2.93      40.1 +/-    2.93  0.040 / 0.050
G22     309.9          25.8               12.9 +/-    1.37      24.6 +/-    1.37  0.050 / 0.050
G25     76.8           15.4               12.5 +/-    0.71      30.9 +/-    0.71  0.050 / 0.070
G31     174.3          61.3               15.8 +/-    0.98      17.7 +/-    0.98  0.120 / 0.150
G32     34.7           53.5               13.2 +/-    0.43      15.9 +/-    0.43  0.100 / 0.120