PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/10-20:13:00
G01     125.0          13.4               16.7 +/-    2.43      43.2 +/-    2.43  0.030 / 0.070
G07     59.4           69.3               13.4 +/-    0.38      14.3 +/-    0.38  0.040 / 0.050
G08     50.8           41.5               11.2 +/-    0.79      15.9 +/-    0.79  0.220 / 0.340
G09     178.5          34.0               14.0 +/-    0.81      22.6 +/-    0.81  0.190 / 0.320
G11     117.8          36.4               15.0 +/-    0.43      23.2 +/-    0.43  0.090 / 0.160
G13     320.6          13.4               10.1 +/-    3.63      26.0 +/-    3.63  0.100 / 0.180
G17     201.7          13.7               18.1 +/-    2.84      46.6 +/-    2.84  0.030 / 0.030
G18     101.9          17.8               13.6 +/-    1.98      31.6 +/-    1.98  0.030 / 0.030
G28     281.1          54.6               13.8 +/-    3.08      16.5 +/-    3.08  0.030 / 0.030
G30     339.8          64.4               12.7 +/-    0.39      13.9 +/-    0.39  0.040 / 0.030