PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/03-19:12:50
G01     81.2           32.7               10.9 +/-    0.94      18.1 +/-    0.94  0.040 / 0.060
G07     131.6          32.6               13.0 +/-    0.66      21.6 +/-    0.66  0.040 / 0.060
G11     60.0           36.1               10.5 +/-    0.62      16.3 +/-    0.62  0.060 / 0.120
G13     285.4          38.4                9.8 +/-    0.88      14.7 +/-    0.88  0.050 / 0.130
G15     309.5          13.2                9.0 +/-    1.19      23.4 +/-    1.19  0.100 / 0.160
G17     219.6          60.8               12.7 +/-    1.33      14.3 +/-    1.33  0.070 / 0.110
G18     55.1           21.0                8.3 +/-    0.94      17.8 +/-    0.94  0.060 / 0.100
G19     217.4          34.0               14.4 +/-    2.42      23.3 +/-    2.42  0.070 / 0.120
G28     352.7          61.6               10.0 +/-    0.90      11.2 +/-    0.90  0.050 / 0.090
G30     123.7          68.2               12.7 +/-    0.93      13.6 +/-    0.93  0.050 / 0.080