PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/05-19:12:50
G08     284.6          22.6               15.1 +/-    1.73      31.3 +/-    1.73  0.070 / 0.110
G10     24.2           63.0               12.4 +/-    1.83      13.7 +/-    1.83  0.070 / 0.130
G14     238.8          54.0               18.2 +/-    2.76      22.0 +/-    2.76  0.250 / 0.210
G18     74.9           45.4               14.4 +/-    1.63      19.4 +/-    1.63  0.140 / 0.150
G21     148.7          27.2               18.8 +/-    1.86      34.9 +/-    1.86  0.170 / 0.270
G24     50.1           22.4               11.6 +/-    2.99      24.1 +/-    2.99  0.180 / 0.380
G27     244.7          26.7               18.9 +/-    2.01      35.5 +/-    2.01  0.030 / 0.020
G31     183.4          12.0               19.6 +/-   23.34      52.3 +/-   23.34  0.030 / 0.020
G32     265.6          72.4               15.6 +/-    0.63      16.3 +/-    0.63  0.080 / 0.130