PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/21-00:58:10
G05     50.6           12.1                7.1 +/-    2.91      18.9 +/-    2.91  0.130 / 0.200
G10     239.3          17.5               14.4 +/-    1.93      33.6 +/-    1.93  0.090 / 0.090
G13     68.5           34.7                8.9 +/-    1.21      14.2 +/-    1.21  0.060 / 0.060
G15     114.0          55.2               12.6 +/-    0.36      14.9 +/-    0.36  0.060 / 0.060
G16     311.0          13.2                8.0 +/-    2.79      20.9 +/-    2.79  0.130 / 0.420
G20     253.1          40.6               13.5 +/-    1.45      19.4 +/-    1.45  0.120 / 0.410
G21     318.4          50.1               10.2 +/-    0.89      12.8 +/-    0.89  0.080 / 0.120
G26     283.4          19.3                9.8 +/-    0.65      21.9 +/-    0.65  0.070 / 0.150
G29     155.9          64.9               10.4 +/-    0.52      11.3 +/-    0.52  0.040 / 0.020