PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/11-03:57:50
G07     22.0           68.5                3.9 +/-    0.52       4.1 +/-    0.52  0.050 / 0.080
G08     60.8           46.8                2.5 +/-    0.27       3.3 +/-    0.27  0.060 / 0.070
G09     180.0          48.2                7.7 +/-    1.51      10.0 +/-    1.51  0.030 / 0.040
G11     129.0          27.9                6.3 +/-    1.49      11.6 +/-    1.49  0.030 / 0.040
G23     160.5          18.6                5.6 +/-    1.74      12.7 +/-    1.74  0.040 / 0.060
G27     39.5           14.9                2.1 +/-    1.90       5.2 +/-    1.90  0.030 / 0.060
G28     261.8          47.2                8.1 +/-    1.30      10.5 +/-    1.30  0.030 / 0.060
G30     323.5          53.1                6.5 +/-    1.12       7.9 +/-    1.12  0.040 / 0.040