PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/30-15:57:40
G02     61.0           31.2               10.3 +/-    1.03      17.6 +/-    1.03  0.030 / 0.030
G05     58.6           62.5               11.6 +/-    0.46      12.9 +/-    0.46  0.030 / 0.040
G12     185.8          32.2               14.0 +/-    1.21      23.5 +/-    1.21  0.060 / 0.110
G13     128.8          15.8               15.7 +/-    2.47      38.2 +/-    2.47  0.060 / 0.110
G15     162.5          13.2               15.9 +/-    1.13      41.3 +/-    1.13  0.080 / 0.340
G20     208.9          60.4               15.8 +/-    0.61      17.9 +/-    0.61  0.080 / 0.310
G21     273.1          20.6                8.0 +/-    3.60      17.4 +/-    3.60  0.050 / 0.050
G25     232.8          50.7               12.9 +/-    1.19      16.1 +/-    1.19  0.050 / 0.050
G29     335.2          61.5               11.1 +/-    0.40      12.4 +/-    0.40  0.060 / 0.060