PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/22-20:57:50
G01     114.8          20.4               12.2 +/-    1.38      26.5 +/-    1.38  0.030 / 0.030
G07     97.0           59.3               12.9 +/-    0.68      14.7 +/-    0.68  0.030 / 0.030
G08     43.0           26.2                9.3 +/-    2.75      17.7 +/-    2.75  0.050 / 0.060
G09     176.7          22.5               11.7 +/-    1.49      24.2 +/-    1.49  0.060 / 0.040
G11     98.7           41.8               12.5 +/-    0.60      17.7 +/-    0.60  0.110 / 0.170
G13     315.1          23.5                9.7 +/-    1.48      19.7 +/-    1.48  0.110 / 0.200
G17     201.8          30.5               12.8 +/-    1.33      22.2 +/-    1.33  0.090 / 0.190
G18     86.4           21.9               11.4 +/-    1.76      23.9 +/-    1.76  0.130 / 0.180
G28     294.6          56.7               10.6 +/-    1.33      12.4 +/-    1.33  0.030 / 0.030
G30     357.3          72.8               12.0 +/-    1.26      12.5 +/-    1.26  0.030 / 0.040