PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/30-17:43:00
G01     102.4          27.9               11.8 +/-    1.17      21.6 +/-    1.17  0.100 / 0.190
G07     113.3          55.1               13.2 +/-    0.70      15.8 +/-    0.70  0.110 / 0.180
G08     41.9           18.0               10.2 +/-    1.12      23.7 +/-    1.12  0.030 / 0.030
G11     83.3           42.9               12.7 +/-    0.68      17.6 +/-    0.68  0.030 / 0.040
G13     305.8          31.2               12.7 +/-    1.31      21.7 +/-    1.31  0.030 / 0.030
G17     208.6          40.1               13.1 +/-    1.61      19.0 +/-    1.61  0.030 / 0.030
G18     75.6           24.8               13.4 +/-    1.46      26.2 +/-    1.46  0.070 / 0.140
G19     210.7          15.5                1.4 +/-   15.97       3.3 +/-   15.97  0.070 / 0.170
G28     327.4          61.6               10.5 +/-    0.56      11.7 +/-    0.56  0.100 / 0.110
G30     50.5           79.6               12.6 +/-    0.75      12.8 +/-    0.75  0.090 / 0.140