PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/24-16:28:00
G07     2.0            66.1               12.9 +/-    0.56      13.9 +/-    0.56  0.040 / 0.060
G08     73.1           52.0               12.9 +/-    0.55      15.9 +/-    0.55  0.040 / 0.060
G09     180.8          55.3               13.3 +/-    1.89      15.7 +/-    1.89  0.040 / 0.050
G11     135.1          23.8               14.7 +/-    1.63      29.5 +/-    1.63  0.030 / 0.040
G23     158.1          21.0               12.6 +/-    1.03      27.1 +/-    1.03  0.040 / 0.060
G27     42.8           20.9               10.1 +/-    1.06      21.7 +/-    1.06  0.050 / 0.060
G28     253.0          42.1               15.5 +/-    0.93      21.9 +/-    0.93  0.100 / 0.320
G30     316.1          47.2               11.2 +/-    0.83      14.6 +/-    0.83  0.100 / 0.240