PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/10-20:12:40
G01     41.8           17.5                9.1 +/-    0.93      21.2 +/-    0.93  0.080 / 0.260
G06     176.5          35.0               13.7 +/-    1.46      21.7 +/-    1.46  0.080 / 0.300
G13     238.5          23.9               10.6 +/-    2.87      21.3 +/-    2.87  0.040 / 0.040
G15     272.0          13.0               12.2 +/-    1.98      31.7 +/-    1.98  0.040 / 0.040
G17     357.1          72.2               12.9 +/-    0.81      13.5 +/-    0.81  0.040 / 0.060
G19     271.2          68.5               12.7 +/-    1.13      13.6 +/-    1.13  0.040 / 0.060
G24     316.8          18.0               14.1 +/-    2.38      32.5 +/-    2.38  0.140 / 0.180
G28     63.4           51.3               11.4 +/-    0.55      14.1 +/-    0.55  0.170 / 0.260
G30     153.3          27.5               13.5 +/-    0.97      25.0 +/-    0.97  0.090 / 0.110