PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-21:42:50
G01     264.3          39.8               11.4 +/-    1.12      16.6 +/-    1.12  0.040 / 0.050
G03     316.3          33.7                7.5 +/-    1.91      12.3 +/-    1.91  0.050 / 0.050
G10     132.4          13.6               12.8 +/-    1.87      32.8 +/-    1.87  0.060 / 0.090
G11     246.7          18.4               11.5 +/-    1.84      26.4 +/-    1.84  0.060 / 0.090
G14     49.1           47.0                7.8 +/-    0.92      10.2 +/-    0.92  0.030 / 0.040
G22     312.8          55.5                7.7 +/-    1.38       9.1 +/-    1.38  0.030 / 0.040
G25     47.8           15.0                7.3 +/-    1.55      18.1 +/-    1.55  0.090 / 0.250
G26     146.7          28.2               14.1 +/-    1.45      25.7 +/-    1.45  0.070 / 0.250
G31     47.8           71.5               10.0 +/-    0.49      10.5 +/-    0.49  0.040 / 0.080
G32     67.9           30.3                8.5 +/-    0.42      14.8 +/-    0.42  0.040 / 0.080