PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/08-19:57:40
G01     319.5          16.2                8.3 +/-    1.11      20.1 +/-    1.11  0.050 / 0.060
G08     259.1          14.1                9.4 +/-    2.58      23.9 +/-    2.58  0.040 / 0.050
G10     75.9           54.9                8.6 +/-    0.44      10.3 +/-    0.44  0.060 / 0.030
G11     305.2          21.9                9.8 +/-    1.61      20.6 +/-    1.61  0.070 / 0.030
G14     291.7          70.3                8.3 +/-    0.74       8.8 +/-    0.74  0.140 / 0.290
G18     100.7          29.0                9.8 +/-    1.17      17.5 +/-    1.17  0.130 / 0.230
G31     178.3          38.1               10.2 +/-    1.05      15.3 +/-    1.05  0.030 / 0.020
G32     0.2            69.4                8.8 +/-    0.29       9.4 +/-    0.29  0.030 / 0.020