PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/13-14:57:40
G02     205.3          36.1               -8.9 +/-    0.92     -13.8 +/-    0.92  0.050 / 0.040
G06     149.2          73.1               11.0 +/-    0.52      11.5 +/-    0.52  0.050 / 0.070
G12     308.8          17.7                7.5 +/-    1.48      17.4 +/-    1.48  0.090 / 0.110
G17     35.8           49.5                8.0 +/-    1.07      10.2 +/-    1.07  0.090 / 0.120
G19     12.0           62.1                9.2 +/-    0.65      10.3 +/-    0.65  0.030 / 0.020
G24     294.0          39.0                7.5 +/-    0.91      11.1 +/-    0.91  0.030 / 0.020
G28     102.8          34.3               10.9 +/-    0.66      17.5 +/-    0.66  0.050 / 0.050