PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-17:27:50
G10     266.7          37.4               11.6 +/-    1.69      17.7 +/-    1.69  0.120 / 0.240
G13     42.5           19.5                9.3 +/-    3.16      20.7 +/-    3.16  0.310 / 0.230
G15     58.4           47.7               10.5 +/-    0.67      13.6 +/-    0.67  0.040 / 0.030
G16     284.5          11.0                9.4 +/-    1.96      25.6 +/-    1.96  0.040 / 0.030
G18     303.8          65.3               11.0 +/-    0.94      12.0 +/-    0.94  0.070 / 0.080
G20     53.5           36.5                9.2 +/-    1.60      14.3 +/-    1.60  0.060 / 0.100
G21     17.1           73.4               12.6 +/-    0.52      13.1 +/-    0.52  0.120 / 0.220
G24     121.5          13.9               15.2 +/-    1.54      38.8 +/-    1.54  0.120 / 0.280
G27     317.9          20.1                9.2 +/-    1.94      20.2 +/-    1.94  0.230 / 0.330
G29     165.7          26.3               13.3 +/-    1.59      25.3 +/-    1.59  0.160 / 0.270