PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/24-22:57:40
G02     65.5           29.5                8.8 +/-    0.36      15.5 +/-    0.36  0.100 / 0.090
G05     50.1           55.8                9.0 +/-    0.38      10.7 +/-    0.38  0.050 / 0.090
G12     182.3          21.5               13.8 +/-    0.92      29.3 +/-    0.92  0.050 / 0.100
G13     121.9          21.6               12.6 +/-    1.04      26.7 +/-    1.04  0.030 / 0.050
G15     160.7          18.2               13.8 +/-    2.41      31.7 +/-    2.41  0.140 / 0.160
G20     213.5          72.4               12.9 +/-    0.78      13.5 +/-    0.78  0.050 / 0.110
G21     278.5          23.0               10.8 +/-    2.23      22.2 +/-    2.23  0.320 / 0.240
G25     218.8          42.5               11.4 +/-    1.03      15.9 +/-    1.03  0.060 / 0.200
G29     336.2          65.6               10.7 +/-    0.61      11.6 +/-    0.61  0.080 / 0.050