PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-18:57:30
G02     25.5           61.6               15.4 +/-    0.72      17.3 +/-    0.72  0.030 / 0.040
G05     155.9          54.5               17.1 +/-    1.05      20.5 +/-    1.05  0.020 / 0.030
G06     51.2           20.2               11.1 +/-    1.25      24.2 +/-    1.25  0.040 / 0.070
G12     208.0          73.1               14.8 +/-    0.68      15.4 +/-    0.68  0.040 / 0.070
G19     96.8           11.3               13.3 +/-    1.72      36.1 +/-    1.72  0.030 / 0.040
G20     197.5          21.9               20.5 +/-    0.98      43.2 +/-    0.98  0.030 / 0.050
G25     300.6          53.5               14.5 +/-    0.80      17.6 +/-    0.80  0.050 / 0.160
G29     304.9          26.5               13.7 +/-    1.20      26.0 +/-    1.20  0.070 / 0.160