PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-23:13:00
G01     88.1           32.3                9.8 +/-    1.45      16.3 +/-    1.45  0.090 / 0.110
G07     127.1          44.4               13.7 +/-    1.27      18.6 +/-    1.27  0.070 / 0.120
G11     69.3           40.7                9.4 +/-    0.87      13.5 +/-    0.87  0.070 / 0.050
G13     293.1          36.1               11.2 +/-    3.00      17.4 +/-    3.00  0.040 / 0.050
G15     313.7          11.2                6.2 +/-   16.38      16.9 +/-   16.38  0.050 / 0.050
G17     216.5          52.3               13.5 +/-    1.23      16.5 +/-    1.23  0.050 / 0.040
G19     215.5          28.6               14.5 +/-    1.56      26.2 +/-    1.56  0.070 / 0.050
G28     353.9          61.5                9.5 +/-    0.87      10.6 +/-    0.87  0.040 / 0.060
G30     113.4          71.5               12.0 +/-    0.63      12.6 +/-    0.63  0.070 / 0.090