PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/07-13:28:00
G07     322.2          54.8                5.8 +/-    0.50       6.9 +/-    0.50  0.410 / 0.740
G08     120.3          45.7                9.4 +/-    0.55      12.6 +/-    0.55  0.310 / 0.820
G09     265.8          82.5                8.2 +/-    0.69       8.3 +/-    0.69  0.040 / 0.050
G16     43.3           18.7                5.4 +/-    2.71      12.3 +/-    2.71  0.030 / 0.050
G23     149.0          53.3                9.6 +/-    0.89      11.6 +/-    0.89  0.050 / 0.060
G27     70.9           36.9                6.7 +/-    0.99      10.3 +/-    0.99  0.060 / 0.060
G28     227.4          14.0                6.3 +/-    4.58      15.9 +/-    4.58  0.030 / 0.020
G30     293.5          30.0                6.3 +/-    2.06      11.1 +/-    2.06  0.030 / 0.020