PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/12-23:28:00
G10     265.3          37.3               13.9 +/-    1.51      21.1 +/-    1.51  0.120 / 0.170
G13     42.6           19.4                7.5 +/-    0.79      16.8 +/-    0.79  0.110 / 0.160
G15     63.8           52.9                8.5 +/-    0.53      10.3 +/-    0.53  0.070 / 0.040
G16     278.9          12.9               10.6 +/-    1.55      27.8 +/-    1.55  0.070 / 0.050
G20     268.7          33.2               15.3 +/-    0.91      25.2 +/-    0.91  0.140 / 0.390
G21     356.1          70.3                9.0 +/-    1.31       9.5 +/-    1.31  0.130 / 0.400
G24     120.2          13.4               11.5 +/-    2.30      29.7 +/-    2.30  0.090 / 0.080
G27     319.5          17.4                7.8 +/-    1.61      18.3 +/-    1.61  0.080 / 0.090
G29     168.2          34.1               11.4 +/-    2.25      18.5 +/-    2.25  0.130 / 0.380