PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-18:57:40
G02     214.9          53.8               13.5 +/-    0.79      16.3 +/-    0.79  0.060 / 0.100
G06     63.0           75.5               10.7 +/-    0.76      11.0 +/-    0.76  0.060 / 0.090
G12     318.6          35.8               10.4 +/-    2.27      16.2 +/-    2.27  0.050 / 0.090
G17     57.8           31.2                9.4 +/-    1.47      16.1 +/-    1.47  0.050 / 0.060
G19     40.0           48.7               10.4 +/-    1.61      13.3 +/-    1.61  0.050 / 0.110
G24     270.4          41.8               11.4 +/-    1.43      16.1 +/-    1.43  0.050 / 0.100
G28     121.8          14.7               10.1 +/-    2.54      25.2 +/-    2.54  0.040 / 0.050