PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/09-13:58:00
G01     102.4          26.9                6.6 +/-    1.10      12.4 +/-    1.10  0.040 / 0.070
G07     113.8          51.4                8.5 +/-    0.76      10.6 +/-    0.76  0.040 / 0.060
G08     41.9           19.6                6.1 +/-    1.89      13.5 +/-    1.89  0.050 / 0.070
G09     174.6          11.6                5.7 +/-    1.71      15.5 +/-    1.71  0.060 / 0.070
G11     83.5           43.5                8.1 +/-    0.69      11.2 +/-    0.69  0.030 / 0.050
G13     306.1          31.8                6.5 +/-    1.08      11.0 +/-    1.08  0.050 / 0.050
G17     207.2          38.7                7.5 +/-    0.79      11.1 +/-    0.79  0.050 / 0.070
G18     75.3           24.4                7.6 +/-    1.19      15.0 +/-    1.19  0.050 / 0.080
G28     313.0          59.4                6.3 +/-    1.04       7.1 +/-    1.04  0.240 / 0.400
G30     51.4           79.3                6.7 +/-    0.68       6.8 +/-    0.68  0.200 / 0.410