PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-22:27:30
G02     62.5           30.2                8.1 +/-    0.46      14.1 +/-    0.46  0.090 / 0.250
G05     52.6           56.8               10.1 +/-    0.30      11.8 +/-    0.30  0.090 / 0.300
G12     184.6          30.0               12.4 +/-    1.19      21.7 +/-    1.19  0.080 / 0.400
G13     123.5          17.7               12.2 +/-    2.84      28.3 +/-    2.84  0.120 / 0.440
G15     160.9          16.1               15.5 +/-    1.64      37.6 +/-    1.64  0.060 / 0.140
G21     274.9          19.4               10.5 +/-    1.62      23.4 +/-    1.62  0.040 / 0.110
G25     231.7          49.2               11.8 +/-    2.82      15.0 +/-    2.82  0.050 / 0.070
G29     333.0          59.8               10.3 +/-    0.61      11.8 +/-    0.61  0.050 / 0.070