PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-17:58:10
G02     203.4          26.8               16.5 +/-    1.27      30.9 +/-    1.27  0.090 / 0.200
G06     163.2          65.4               12.5 +/-    0.74      13.7 +/-    0.74  0.090 / 0.280
G12     306.2          13.8                9.8 +/-    1.60      25.2 +/-    1.60  0.060 / 0.120
G17     35.3           49.9               10.0 +/-    0.80      12.6 +/-    0.80  0.060 / 0.090
G19     358.9          66.5               10.9 +/-    0.48      11.7 +/-    0.48  0.030 / 0.060
G24     303.6          34.9                9.4 +/-    1.27      15.0 +/-    1.27  0.030 / 0.050
G28     99.2           33.5               11.0 +/-    0.51      18.0 +/-    0.51  0.060 / 0.170