PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-15:28:10
G02     207.8          44.8               15.5 +/-    0.95      21.0 +/-    0.95  0.080 / 0.140
G06     127.9          78.7               12.5 +/-    0.59      12.8 +/-    0.59  0.110 / 0.170
G12     313.6          24.5               12.8 +/-    2.50      25.3 +/-    2.50  0.060 / 0.080
G17     48.5           38.8               10.3 +/-    0.39      15.3 +/-    0.39  0.050 / 0.080
G19     25.6           56.5               11.0 +/-    0.59      12.9 +/-    0.59  0.030 / 0.030
G24     286.0          41.2               11.6 +/-    1.86      16.5 +/-    1.86  0.030 / 0.030
G28     113.3          22.8               11.3 +/-    0.77      23.3 +/-    0.77  0.030 / 0.060