PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/29-18:57:50
G02     323.5          79.9                9.8 +/-    0.47      10.0 +/-    0.47  0.070 / 0.080
G05     165.3          31.7               14.4 +/-    1.95      24.3 +/-    1.95  0.070 / 0.090
G06     41.7           39.9                8.6 +/-    1.57      12.5 +/-    1.57  0.230 / 0.260
G12     312.5          73.7                9.8 +/-    0.71      10.2 +/-    0.71  0.200 / 0.230
G17     84.9           12.0               12.1 +/-    1.52      32.4 +/-    1.52  0.120 / 0.130
G19     71.6           30.9               10.9 +/-    1.60      18.8 +/-    1.60  0.130 / 0.110
G24     228.3          23.5               12.3 +/-    2.07      24.8 +/-    2.07  0.030 / 0.030
G25     317.4          27.8                9.2 +/-    1.71      16.8 +/-    1.71  0.030 / 0.060