PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-21:58:00
G10     255.8          30.0               14.5 +/-    2.05      25.3 +/-    2.05  0.070 / 0.110
G13     49.6           27.9               11.3 +/-    1.99      20.8 +/-    1.99  0.140 / 0.130
G15     75.7           55.9               13.5 +/-    0.59      16.0 +/-    0.59  0.140 / 0.240
G16     293.0          13.7               10.8 +/-    2.99      27.8 +/-    2.99  0.170 / 0.250
G18     278.7          59.4               13.6 +/-    2.03      15.6 +/-    2.03  0.060 / 0.050
G20     47.1           43.1               12.6 +/-    0.93      17.4 +/-    0.93  0.050 / 0.070
G21     343.6          65.2               13.4 +/-    0.69      14.6 +/-    0.69  0.390 / 0.270
G26     265.6          12.9               14.9 +/-    2.12      38.9 +/-    2.12  0.240 / 0.410
G27     321.7          11.4               -1.6 +/-   29.59      -4.3 +/-   29.59  0.040 / 0.030
G29     164.6          39.3               15.5 +/-    1.13      22.8 +/-    1.13  0.060 / 0.030