PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-15:57:40
G02     213.1          54.4               18.8 +/-    0.83      22.6 +/-    0.83  0.050 / 0.090
G06     72.6           78.0               15.0 +/-    0.49      15.3 +/-    0.49  0.060 / 0.080
G12     317.5          32.7               14.8 +/-    1.54      24.6 +/-    1.54  0.060 / 0.080
G17     56.2           32.5               12.3 +/-    0.55      20.5 +/-    0.55  0.060 / 0.090
G19     37.6           50.1               12.9 +/-    0.30      16.3 +/-    0.30  0.020 / 0.030
G24     273.1          41.9               15.5 +/-    1.03      21.9 +/-    1.03  0.030 / 0.030
G28     120.5          15.9               14.5 +/-    1.68      35.3 +/-    1.68  0.040 / 0.080