PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/07-15:57:50
G02     213.1          53.0                7.9 +/-    0.89       9.6 +/-    0.89  0.090 / 0.210
G06     73.4           77.4                8.4 +/-    0.52       8.6 +/-    0.52  0.070 / 0.190
G12     316.1          30.9                8.8 +/-    1.04      15.1 +/-    1.04  0.050 / 0.050
G17     50.2           38.7                7.8 +/-    1.54      11.6 +/-    1.54  0.090 / 0.070
G19     34.9           51.1                8.3 +/-    1.69      10.4 +/-    1.69  0.060 / 0.080
G24     272.8          41.8                9.0 +/-    2.52      12.7 +/-    2.52  0.060 / 0.090
G28     117.1          23.0                8.7 +/-    2.19      17.8 +/-    2.19  0.040 / 0.050