PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-15:28:00
G01     80.7           32.6                6.3 +/-    1.10      10.4 +/-    1.10  0.040 / 0.060
G07     131.4          34.7                8.5 +/-    0.74      13.6 +/-    0.74  0.040 / 0.050
G11     60.4           36.7                7.8 +/-    0.99      12.0 +/-    0.99  0.050 / 0.090
G13     285.0          38.6               12.1 +/-    3.90      18.1 +/-    3.90  0.070 / 0.120
G15     309.7          13.0                8.3 +/-    2.25      21.7 +/-    2.25  0.050 / 0.080
G17     219.7          58.4               11.0 +/-    1.10      12.7 +/-    1.10  0.060 / 0.090
G18     55.6           21.4                7.5 +/-    2.79      16.0 +/-    2.79  0.080 / 0.070
G19     217.3          34.8               11.5 +/-    1.09      18.3 +/-    1.09  0.070 / 0.060
G28     350.6          61.6                8.3 +/-    0.84       9.3 +/-    0.84  0.140 / 0.210
G30     124.0          67.9                8.8 +/-    0.53       9.5 +/-    0.53  0.160 / 0.240