PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/14-16:58:00
G07     351.5          63.8               11.1 +/-    0.55      12.3 +/-    0.55  0.040 / 0.040
G08     82.3           53.5               10.5 +/-    0.84      12.8 +/-    0.84  0.030 / 0.040
G09     182.7          61.1               11.5 +/-    0.83      12.9 +/-    0.83  0.070 / 0.060
G11     138.9          20.4               12.4 +/-    3.46      27.1 +/-    3.46  0.070 / 0.080
G23     157.0          25.4                9.8 +/-    2.44      19.0 +/-    2.44  0.040 / 0.040
G27     45.7           24.4                9.1 +/-    1.81      18.1 +/-    1.81  0.040 / 0.030
G28     247.8          38.6               11.7 +/-    0.91      17.4 +/-    0.91  0.060 / 0.110
G30     312.1          43.8               10.1 +/-    0.92      13.9 +/-    0.92  0.050 / 0.090