PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/13-17:27:50
G01     319.9          15.2                6.2 +/-    1.34      15.3 +/-    1.34  0.190 / 0.260
G08     261.4          14.7                7.2 +/-    3.34      18.0 +/-    3.34  0.220 / 0.290
G10     74.0           55.4                8.5 +/-    0.72      10.1 +/-    0.72  0.200 / 0.360
G11     307.1          20.4                8.2 +/-    2.62      17.8 +/-    2.62  0.200 / 0.480
G14     285.9          69.3                9.7 +/-    0.38      10.3 +/-    0.38  0.070 / 0.080
G18     100.0          29.3                9.3 +/-    1.01      16.6 +/-    1.01  0.060 / 0.060
G27     225.3          10.4               10.2 +/-    3.18      28.2 +/-    3.18  0.030 / 0.050
G31     177.3          38.0               14.3 +/-    1.75      21.5 +/-    1.75  0.040 / 0.050
G32     0.2            69.7                9.1 +/-    0.75       9.6 +/-    0.75  0.030 / 0.030