PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/22-16:58:10
G02     70.9           23.3               12.0 +/-    0.72      24.5 +/-    0.72  0.030 / 0.040
G05     47.4           51.2               10.6 +/-    0.63      13.1 +/-    0.63  0.030 / 0.040
G12     183.0          19.5               15.7 +/-    2.12      35.1 +/-    2.12  0.040 / 0.040
G13     118.4          24.2               13.8 +/-    1.00      27.5 +/-    1.00  0.040 / 0.040
G15     155.6          23.4               15.9 +/-    1.37      32.2 +/-    1.37  0.070 / 0.160
G18     222.4          13.5               12.5 +/-    1.96      32.4 +/-    1.96  0.070 / 0.160
G20     220.4          74.4               14.9 +/-    0.56      15.4 +/-    0.56  0.120 / 0.170
G21     283.4          27.8               11.8 +/-    1.62      21.7 +/-    1.62  0.120 / 0.270
G25     218.9          40.0               17.9 +/-    1.59      26.0 +/-    1.59  0.060 / 0.100
G29     348.3          73.6               13.9 +/-    0.46      14.4 +/-    0.46  0.050 / 0.080