PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-18:27:50
G02     81.7           14.9               13.8 +/-    1.52      34.4 +/-    1.52  0.080 / 0.150
G05     44.5           38.3               13.7 +/-    0.59      20.4 +/-    0.59  0.080 / 0.170
G13     104.1          32.4               17.2 +/-    0.69      28.7 +/-    0.69  0.130 / 0.320
G15     146.6          35.6               16.5 +/-    1.43      25.8 +/-    1.43  0.130 / 0.320
G18     229.6          25.5               15.9 +/-    1.74      30.8 +/-    1.74  0.050 / 0.120
G20     314.4          85.5               14.8 +/-    0.54      14.8 +/-    0.54  0.070 / 0.120
G21     295.3          35.8               14.4 +/-    1.16      22.5 +/-    1.16  0.040 / 0.060
G25     208.6          27.0               17.1 +/-    1.08      31.9 +/-    1.08  0.040 / 0.070
G26     311.7          14.8               13.5 +/-    1.76      33.8 +/-    1.76  0.050 / 0.130
G29     54.1           85.4               13.9 +/-    1.22      14.0 +/-    1.22  0.040 / 0.120