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                8.2 +/-    1.04      14.4 +/-    1.04  0.080 / 0.070
G05     52.6           56.8                9.1 +/-    1.62      10.6 +/-    1.62  0.090 / 0.080
G12     184.6          30.0               11.7 +/-    1.48      20.6 +/-    1.48  0.060 / 0.090
G13     123.5          17.7               11.0 +/-    2.54      25.5 +/-    2.54  0.060 / 0.110
G15     160.9          16.1               13.3 +/-    1.60      32.1 +/-    1.60  0.120 / 0.250
G21     274.9          19.4               10.7 +/-    2.29      23.8 +/-    2.29  0.110 / 0.280
G25     231.7          49.2               10.9 +/-    2.02      13.9 +/-    2.02  0.080 / 0.220
G29     333.0          59.8                9.4 +/-    0.46      10.7 +/-    0.46  0.090 / 0.250