PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-19:42:50
G01     320.7          12.1                6.1 +/-    8.47      16.2 +/-    8.47  0.140 / 0.160
G08     263.6          16.4               10.4 +/-    1.95      25.0 +/-    1.95  0.250 / 0.170
G10     67.5           57.3                8.1 +/-    0.88       9.4 +/-    0.88  0.060 / 0.080
G11     309.1          19.2                7.6 +/-    0.84      17.0 +/-    0.84  0.050 / 0.080
G14     277.4          68.4                9.2 +/-    0.58       9.8 +/-    0.58  0.030 / 0.020
G18     96.4           32.3                8.0 +/-    1.09      13.3 +/-    1.09  0.020 / 0.020
G27     227.8          12.8                8.4 +/-    3.17      22.0 +/-    3.17  0.180 / 0.230
G31     179.1          32.8                9.7 +/-    0.90      16.1 +/-    0.90  0.120 / 0.240
G32     347.4          72.4                8.7 +/-    0.62       9.1 +/-    0.62  0.040 / 0.040