PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-20:12:30
G01     222.3          13.0                9.9 +/-    1.50      25.9 +/-    1.50  0.030 / 0.030
G03     264.5          70.8               10.2 +/-    0.76      10.7 +/-    0.76  0.030 / 0.040
G14     91.5           21.3                9.9 +/-    1.49      21.1 +/-    1.49  0.120 / 0.230
G16     143.4          50.2               13.1 +/-    0.59      16.4 +/-    0.59  0.130 / 0.340
G22     203.8          65.3               11.8 +/-    0.70      12.8 +/-    0.70  0.070 / 0.110
G23     312.1          42.0                8.9 +/-    0.97      12.5 +/-    0.97  0.120 / 0.090
G26     86.5           54.6                9.7 +/-    1.64      11.6 +/-    1.64  0.180 / 0.690
G31     47.5           27.4                6.6 +/-    1.66      12.2 +/-    1.66  0.150 / 0.290