PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/09-15:28:00
G01     54.9           28.1                6.8 +/-    2.15      12.4 +/-    2.15  0.040 / 0.040
G06     178.6          18.6              -21.0 +/-   20.91     -47.9 +/-   20.91  0.040 / 0.050
G07     143.3          14.6                7.9 +/-    3.10      19.8 +/-    3.10  0.180 / 0.220
G11     46.2           20.6                7.0 +/-    2.57      15.2 +/-    2.57  0.270 / 0.210
G13     256.2          34.3               11.6 +/-    1.14      18.6 +/-    1.14  0.150 / 0.420
G15     289.4          16.3                8.6 +/-    1.29      20.6 +/-    1.29  0.150 / 0.370
G17     268.0          76.7                8.5 +/-    0.54       8.7 +/-    0.54  0.030 / 0.030
G19     237.0          55.9                9.0 +/-    2.62      10.6 +/-    2.62  0.030 / 0.040
G28     33.0           58.3                8.0 +/-    0.69       9.2 +/-    0.69  0.090 / 0.070
G30     146.1          46.3                8.4 +/-    0.40      11.2 +/-    0.40  0.120 / 0.100