PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/31-15:57:50
G08     269.0          17.8                7.2 +/-    0.86      16.8 +/-    0.86  0.080 / 0.110
G10     60.9           58.7                7.3 +/-    0.62       8.3 +/-    0.62  0.050 / 0.110
G11     312.8          15.6                5.8 +/-    2.22      14.3 +/-    2.22  0.100 / 0.160
G14     266.2          65.4                6.8 +/-    0.67       7.4 +/-    0.67  0.100 / 0.160
G21     153.7          12.4               10.6 +/-    1.53      28.0 +/-    1.53  0.110 / 0.360
G24     40.0           10.6                7.8 +/-    1.59      21.4 +/-    1.59  0.100 / 0.330
G27     230.7          15.4                7.9 +/-    1.70      19.4 +/-    1.70  0.030 / 0.050
G31     178.3          30.7               11.9 +/-    2.18      20.5 +/-    2.18  0.040 / 0.050
G32     340.8          73.9                7.3 +/-    0.52       7.6 +/-    0.52  0.030 / 0.030