PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/29-17:57:40
G07     312.3          50.8               10.7 +/-    0.77      13.3 +/-    0.77  0.030 / 0.060
G08     126.0          40.9               13.5 +/-    1.23      19.3 +/-    1.23  0.030 / 0.060
G09     304.9          77.8               11.5 +/-    0.60      11.7 +/-    0.60  0.040 / 0.030
G16     42.0           28.5                8.5 +/-    1.72      15.3 +/-    1.72  0.040 / 0.030
G23     144.5          64.5               12.5 +/-    0.82      13.7 +/-    0.82  0.060 / 0.060
G27     81.8           37.8               10.7 +/-    0.86      16.1 +/-    0.86  0.050 / 0.060
G30     286.2          22.9               10.5 +/-    2.92      21.4 +/-    2.92  0.090 / 0.140