PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-15:58:00
G01     97.6           29.7               12.9 +/-    1.14      22.8 +/-    1.14  0.150 / 0.480
G07     118.9          51.3               11.8 +/-    0.38      14.6 +/-    0.38  0.090 / 0.170
G08     41.9           13.2                9.0 +/-    2.97      23.4 +/-    2.97  0.030 / 0.030
G11     76.6           41.8               10.5 +/-    1.46      14.9 +/-    1.46  0.030 / 0.020
G13     301.5          33.6                8.2 +/-    2.26      13.3 +/-    2.26  0.020 / 0.050
G17     210.5          46.0               12.6 +/-    0.86      16.7 +/-    0.86  0.030 / 0.040
G18     70.5           24.7               13.0 +/-    1.18      25.5 +/-    1.18  0.040 / 0.050
G19     212.2          18.9               11.2 +/-    1.42      25.4 +/-    1.42  0.060 / 0.050
G28     336.1          61.8                9.8 +/-    0.55      11.0 +/-    0.55  0.400 / 0.390
G30     72.7           79.6               12.3 +/-    0.68      12.5 +/-    0.68  0.230 / 0.290