PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/15-19:13:30
G01     321.0          10.4              -17.1 +/-   26.38     -47.3 +/-   26.38  0.220 / 0.220
G08     265.7          17.2               11.0 +/-    2.03      25.8 +/-    2.03  0.250 / 0.280
G10     63.8           58.1                9.7 +/-    0.71      11.2 +/-    0.71  0.130 / 0.480
G11     310.7          17.9                9.7 +/-    1.56      22.6 +/-    1.56  0.030 / 0.030
G14     272.0          67.3               10.8 +/-    0.69      11.6 +/-    0.69  0.040 / 0.030
G18     94.6           33.5                9.4 +/-    0.72      15.3 +/-    0.72  0.040 / 0.050
G27     229.2          14.2               10.9 +/-    3.34      27.6 +/-    3.34  0.030 / 0.050
G31     179.3          30.9               12.6 +/-    1.92      21.6 +/-    1.92  0.100 / 0.280
G32     341.7          73.4               10.5 +/-    0.54      10.9 +/-    0.54  0.130 / 0.320