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                9.1 +/-    1.02      16.2 +/-    1.02  0.030 / 0.040
G05     52.3           58.3                9.9 +/-    0.47      11.4 +/-    0.47  0.030 / 0.040
G12     182.1          25.8               13.5 +/-    1.67      25.9 +/-    1.67  0.130 / 0.270
G13     121.7          18.9               15.2 +/-    2.08      34.3 +/-    2.08  0.100 / 0.300
G15     160.3          17.5               17.0 +/-    3.08      39.9 +/-    3.08  0.050 / 0.150
G21     276.4          20.2               10.6 +/-    1.40      23.3 +/-    1.40  0.060 / 0.170
G25     229.7          47.8               13.8 +/-    2.13      17.9 +/-    2.13  0.090 / 0.520
G29     332.3          59.7                9.2 +/-    0.59      10.5 +/-    0.59  0.090 / 0.330