PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/28-03:27:50
G08     276.4          21.4                7.6 +/-    1.44      16.1 +/-    1.44  0.150 / 0.270
G10     42.3           61.4                6.1 +/-    0.46       6.9 +/-    0.46  0.110 / 0.260
G14     247.3          57.7                9.6 +/-    0.90      11.1 +/-    0.90  0.050 / 0.080
G18     316.1          23.4                5.8 +/-    2.45      11.9 +/-    2.45  0.040 / 0.090
G20     62.8           60.9               10.4 +/-    1.03      11.7 +/-    1.03  0.030 / 0.040
G21     152.9          25.6                9.0 +/-    3.43      17.3 +/-    3.43  0.030 / 0.040
G24     43.6           15.6                5.7 +/-    2.24      13.9 +/-    2.24  0.140 / 0.350
G27     239.5          22.3                9.4 +/-    5.01      19.6 +/-    5.01  0.150 / 0.350
G31     178.8          22.4               10.3 +/-    3.19      21.4 +/-    3.19  0.120 / 0.200
G32     306.7          76.9                8.1 +/-    0.97       8.3 +/-    0.97  0.120 / 0.220