PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/09-23:57:40
G02     12.1           69.9               10.1 +/-    0.91      10.6 +/-    0.91  0.030 / 0.030
G05     157.5          44.7               13.1 +/-    0.98      17.7 +/-    0.98  0.030 / 0.030
G06     44.0           32.8                9.5 +/-    1.17      15.6 +/-    1.17  0.150 / 0.200
G12     286.2          77.3               10.6 +/-    0.60      10.8 +/-    0.60  0.220 / 0.360
G19     84.3           20.3               13.4 +/-    1.93      29.3 +/-    1.93  0.070 / 0.110
G24     220.0          15.1               15.4 +/-    1.88      38.2 +/-    1.88  0.060 / 0.080
G25     313.8          38.7               10.1 +/-    1.15      15.0 +/-    1.15  0.040 / 0.040
G29     295.0          18.1               11.5 +/-    1.82      26.5 +/-    1.82  0.030 / 0.050