PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/11-22:57:30
G02     268.5          80.4                7.2 +/-    0.50       7.3 +/-    0.50  0.210 / 0.280
G05     168.6          21.9               13.5 +/-    2.54      28.4 +/-    2.54  0.190 / 0.290
G06     39.1           54.7                8.7 +/-    0.91      10.4 +/-    0.91  0.090 / 0.120
G12     320.4          55.1                7.2 +/-    0.81       8.5 +/-    0.81  0.080 / 0.120
G17     75.3           18.7                7.8 +/-    3.15      17.8 +/-    3.15  0.040 / 0.030
G19     62.9           34.4                9.6 +/-    1.40      15.3 +/-    1.40  0.030 / 0.030
G24     238.5          31.0                9.9 +/-    1.94      17.0 +/-    1.94  0.040 / 0.040
G25     317.2          17.5                6.9 +/-    2.55      16.1 +/-    2.55  0.040 / 0.030