PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-21:42:40
G02     65.6           29.0               12.3 +/-    1.63      22.0 +/-    1.63  0.070 / 0.210
G05     50.9           57.5               12.7 +/-    0.63      14.7 +/-    0.63  0.080 / 0.230
G12     182.9          22.6               18.3 +/-    2.91      37.7 +/-    2.91  0.070 / 0.180
G13     122.6          21.2               18.3 +/-    1.19      39.1 +/-    1.19  0.070 / 0.190
G15     160.3          18.2               21.2 +/-    2.51      48.9 +/-    2.51  0.050 / 0.080
G20     213.2          71.4               17.0 +/-    0.80      17.8 +/-    0.80  0.050 / 0.090
G21     278.2          22.9               14.5 +/-    1.24      29.7 +/-    1.24  0.030 / 0.030
G25     219.2          43.0               16.3 +/-    1.17      22.7 +/-    1.17  0.030 / 0.030
G29     336.7          65.7               14.2 +/-    1.00      15.4 +/-    1.00  0.030 / 0.040