PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/25-15:42:30
G02     285.5          81.2               11.0 +/-    0.75      11.1 +/-    0.75  0.040 / 0.050
G05     171.2          22.5               14.2 +/-    1.38      29.5 +/-    1.38  0.030 / 0.050
G06     39.9           49.8                8.8 +/-    0.91      11.2 +/-    0.91  0.080 / 0.140
G12     319.4          61.9                9.6 +/-    0.61      10.7 +/-    0.61  0.100 / 0.130
G17     80.7           14.2                8.5 +/-    1.84      21.7 +/-    1.84  0.060 / 0.160
G19     68.5           30.8               10.0 +/-    0.80      17.2 +/-    0.80  0.060 / 0.170
G24     237.2          29.1               12.8 +/-    1.21      22.8 +/-    1.21  0.090 / 0.200
G25     317.8          23.8                8.8 +/-    2.15      17.7 +/-    2.15  0.090 / 0.200