PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/27-18:42:50
G02     19.7           65.5               15.4 +/-    0.43      16.8 +/-    0.43  0.160 / 0.360
G05     159.9          49.4               19.2 +/-    1.17      24.4 +/-    1.17  0.250 / 0.340
G06     48.8           24.1               13.4 +/-    0.62      26.7 +/-    0.62  0.020 / 0.030
G12     223.6          77.3               14.2 +/-    0.69      14.5 +/-    0.69  0.020 / 0.040
G19     92.8           14.3               15.6 +/-    1.51      39.6 +/-    1.51  0.040 / 0.060
G20     197.3          17.2               17.4 +/-    1.41      40.9 +/-    1.41  0.040 / 0.090
G24     216.4          10.3               16.4 +/-    2.09      45.6 +/-    2.09  0.050 / 0.160
G25     306.3          49.8               15.1 +/-    0.86      19.0 +/-    0.86  0.070 / 0.140
G29     301.4          23.1               14.1 +/-    2.27      28.7 +/-    2.27  0.030 / 0.070