PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-08:57:30
G08     105.3          49.6                7.6 +/-    0.70       9.6 +/-    0.70  0.030 / 0.070
G09     193.0          78.0                5.4 +/-    0.88       5.5 +/-    0.88  0.040 / 0.050
G16     44.7           14.6                3.0 +/-    2.17       7.7 +/-    2.17  0.040 / 0.070
G23     153.7          49.8                8.5 +/-    0.55      10.7 +/-    0.55  0.050 / 0.090
G27     60.0           33.5                4.4 +/-    0.41       7.1 +/-    0.41  0.030 / 0.030
G28     233.3          25.4               10.1 +/-    3.13      19.6 +/-    3.13  0.030 / 0.030
G30     296.5          30.0                5.6 +/-    1.80       9.8 +/-    1.80  0.110 / 0.150