PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-22:42:30
G01     230.7          21.1                7.8 +/-    2.48      16.6 +/-    2.48  0.030 / 0.040
G03     299.0          63.7                2.8 +/-    1.06       3.1 +/-    1.06  0.030 / 0.040
G14     81.7           27.5                5.7 +/-    1.40      10.4 +/-    1.40  0.070 / 0.190
G16     155.3          37.4                8.8 +/-    0.93      13.4 +/-    0.93  0.080 / 0.140
G22     236.8          74.5                5.4 +/-    0.58       5.6 +/-    0.58  0.050 / 0.120
G23     302.7          32.7                6.5 +/-    1.08      10.8 +/-    1.08  0.050 / 0.120
G26     111.2          52.8                7.4 +/-    1.28       9.0 +/-    1.28  0.060 / 0.340
G31     42.5           39.1                3.8 +/-    0.59       5.7 +/-    0.59  0.070 / 0.310
G32     94.8           10.3                6.1 +/-    1.22      17.1 +/-    1.22  0.040 / 0.070