PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-14:58:00
G01     103.0          27.5               10.9 +/-    1.33      20.0 +/-    1.33  0.090 / 0.150
G07     112.6          55.3               11.4 +/-    0.46      13.5 +/-    0.46  0.100 / 0.130
G08     41.7           16.8                8.7 +/-    2.32      20.7 +/-    2.32  0.030 / 0.020
G11     83.0           42.5               11.3 +/-    0.84      15.8 +/-    0.84  0.020 / 0.020
G13     306.2          31.1                8.9 +/-    1.06      15.3 +/-    1.06  0.030 / 0.030
G17     207.7          41.4               12.0 +/-    1.01      17.1 +/-    1.01  0.020 / 0.040
G18     75.9           24.6               11.3 +/-    2.87      22.3 +/-    2.87  0.060 / 0.120
G19     210.6          14.2                3.8 +/-   17.18       9.6 +/-   17.18  0.070 / 0.130
G28     325.7          61.5                8.6 +/-    0.72       9.6 +/-    0.72  0.060 / 0.110
G30     40.3           79.6               10.6 +/-    0.45      10.8 +/-    0.45  0.060 / 0.130