PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/18-22:58:00
G01     94.0           30.9               16.7 +/-    1.61      28.8 +/-    1.61  0.080 / 0.090
G07     122.2          48.8               19.5 +/-    0.47      24.9 +/-    0.47  0.080 / 0.090
G08     42.3           13.5               12.1 +/-    4.06      31.2 +/-    4.06  0.160 / 0.460
G11     75.6           42.4               15.9 +/-    1.00      22.3 +/-    1.00  0.310 / 0.270
G13     298.8          34.4               15.0 +/-    1.72      24.1 +/-    1.72  0.040 / 0.040
G17     213.0          47.2               19.6 +/-    0.45      25.7 +/-    0.45  0.040 / 0.050
G19     213.3          23.9               25.2 +/-    2.86      50.5 +/-    2.86  0.040 / 0.060
G28     343.8          61.9               15.1 +/-    0.55      16.9 +/-    0.55  0.050 / 0.050
G30     98.7           75.3               17.7 +/-    0.73      18.3 +/-    0.73  0.050 / 0.060