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               18.2 +/-    0.77      21.9 +/-    0.77  0.060 / 0.130
G06     72.6           78.0               16.1 +/-    0.41      16.4 +/-    0.41  0.100 / 0.100
G12     317.5          32.7               13.8 +/-    1.89      22.9 +/-    1.89  0.050 / 0.060
G17     56.2           32.5               11.9 +/-    0.74      19.8 +/-    0.74  0.050 / 0.070
G19     37.6           50.1               14.0 +/-    1.75      17.6 +/-    1.75  0.040 / 0.110
G24     273.1          41.9               17.0 +/-    2.14      24.0 +/-    2.14  0.040 / 0.060
G28     120.5          15.9               15.4 +/-    2.52      37.6 +/-    2.52  0.020 / 0.020