PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/16-14:43:10
G01     95.7           30.3                9.9 +/-    0.62      17.2 +/-    0.62  0.030 / 0.030
G07     120.8          49.7               10.6 +/-    0.60      13.4 +/-    0.60  0.030 / 0.030
G08     41.9           11.0                8.6 +/-    3.25      23.6 +/-    3.25  0.060 / 0.060
G11     73.8           41.1               10.4 +/-    0.82      14.9 +/-    0.82  0.040 / 0.060
G13     299.6          34.4                9.8 +/-    1.15      15.7 +/-    1.15  0.110 / 0.290
G17     211.2          48.7               10.5 +/-    1.26      13.5 +/-    1.26  0.120 / 0.250
G18     68.5           24.4                9.0 +/-    0.50      17.9 +/-    0.50  0.020 / 0.050
G19     212.9          20.1                9.3 +/-    2.29      20.5 +/-    2.29  0.030 / 0.050
G28     339.4          61.9                9.2 +/-    0.55      10.3 +/-    0.55  0.040 / 0.070
G30     80.2           79.4               10.8 +/-    0.39      11.0 +/-    0.39  0.040 / 0.080