PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-14:43:00
G01     98.5           28.6                9.4 +/-    1.04      17.0 +/-    1.04  0.060 / 0.060
G07     118.2          48.0               10.0 +/-    0.59      12.9 +/-    0.59  0.060 / 0.050
G08     41.7           16.0                7.7 +/-    3.31      18.7 +/-    3.31  0.050 / 0.080
G11     78.1           42.8                9.0 +/-    1.72      12.5 +/-    1.72  0.040 / 0.070
G13     302.6          33.8                8.4 +/-    1.28      13.6 +/-    1.28  0.040 / 0.050
G17     208.9          43.0               11.4 +/-    0.75      15.9 +/-    0.75  0.050 / 0.050
G18     71.1           24.4                8.3 +/-    1.08      16.5 +/-    1.08  0.050 / 0.080
G19     210.4          20.7                5.2 +/-   10.52      11.3 +/-   10.52  0.060 / 0.080
G28     320.5          60.3                8.3 +/-    0.67       9.4 +/-    0.67  0.130 / 0.160
G30     75.3           78.7                9.4 +/-    0.78       9.5 +/-    0.78  0.110 / 0.170