PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-22:42:40
G02     57.7           34.0                8.0 +/-    0.82      12.9 +/-    0.82  0.120 / 0.420
G05     60.0           61.9                9.7 +/-    0.77      10.9 +/-    0.77  0.150 / 0.460
G12     186.0          36.4               10.5 +/-    1.66      16.3 +/-    1.66  0.050 / 0.060
G13     128.3          13.7               11.7 +/-    3.19      29.9 +/-    3.19  0.040 / 0.080
G15     164.0          11.4               13.5 +/-   13.75      36.6 +/-   13.75  0.050 / 0.100
G21     270.0          15.8               11.4 +/-    2.24      27.7 +/-    2.24  0.050 / 0.120
G25     240.3          53.4                8.9 +/-    1.07      10.8 +/-    1.07  0.070 / 0.090
G29     328.8          54.2                8.7 +/-    1.43      10.5 +/-    1.43  0.050 / 0.080