PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/27-16:27:50
G02     63.7           29.4                9.7 +/-    1.12      17.2 +/-    1.12  0.180 / 0.320
G05     52.3           58.3               12.4 +/-    0.74      14.3 +/-    0.74  0.140 / 0.410
G12     182.1          25.8               13.6 +/-    2.80      26.0 +/-    2.80  0.110 / 0.150
G13     121.7          18.9               13.9 +/-    2.04      31.4 +/-    2.04  0.100 / 0.150
G15     160.3          17.5               16.9 +/-    2.30      39.6 +/-    2.30  0.110 / 0.240
G21     276.4          20.2               10.1 +/-    1.54      22.1 +/-    1.54  0.090 / 0.240
G25     229.7          47.8               12.3 +/-    3.29      16.0 +/-    3.29  0.180 / 0.220
G29     332.3          59.7                9.6 +/-    0.69      10.9 +/-    0.69  0.120 / 0.170