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               14.5 +/-    1.21      26.6 +/-    1.21  0.100 / 0.140
G07     113.3          55.1               13.5 +/-    0.42      16.1 +/-    0.42  0.080 / 0.170
G08     41.9           18.0               10.5 +/-    0.84      24.2 +/-    0.84  0.030 / 0.050
G11     83.3           42.9               13.2 +/-    0.53      18.3 +/-    0.53  0.020 / 0.060
G13     305.8          31.2               12.9 +/-    1.62      22.1 +/-    1.62  0.030 / 0.040
G17     208.6          40.1               13.7 +/-    1.55      19.9 +/-    1.55  0.030 / 0.030
G18     75.6           24.8               13.0 +/-    1.39      25.4 +/-    1.39  0.040 / 0.080
G19     210.7          15.5               -2.8 +/-   12.02      -6.9 +/-   12.02  0.050 / 0.090
G28     327.4          61.6               11.4 +/-    0.82      12.8 +/-    0.82  0.040 / 0.080
G30     50.5           79.6               13.3 +/-    0.42      13.5 +/-    0.42  0.040 / 0.070