PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/14-21:27:50
G02     64.7           29.7                9.7 +/-    1.39      17.1 +/-    1.39  0.080 / 0.270
G05     52.1           58.8               10.3 +/-    0.69      11.8 +/-    0.69  0.090 / 0.240
G12     183.2          23.9               11.7 +/-    3.07      23.4 +/-    3.07  0.090 / 0.180
G13     123.6          20.4               12.6 +/-    1.71      27.5 +/-    1.71  0.100 / 0.200
G15     160.9          17.2               15.9 +/-    3.04      37.5 +/-    3.04  0.040 / 0.090
G20     212.1          70.0               14.1 +/-    0.83      14.9 +/-    0.83  0.040 / 0.080
G21     277.3          22.2               11.2 +/-    0.81      23.4 +/-    0.81  0.030 / 0.040
G25     220.5          44.1               14.2 +/-    0.96      19.4 +/-    0.96  0.030 / 0.040
G29     335.9          64.5               11.2 +/-    1.01      12.2 +/-    1.01  0.020 / 0.030