PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/09-16:58:00
G01     104.4          27.0               10.0 +/-    0.57      18.7 +/-    0.57  0.030 / 0.040
G07     110.8          56.5                9.7 +/-    0.32      11.3 +/-    0.32  0.030 / 0.040
G08     41.9           19.2                7.2 +/-    1.14      16.1 +/-    1.14  0.030 / 0.040
G09     174.0          10.9               10.2 +/-    2.35      27.8 +/-    2.35  0.030 / 0.050
G11     85.7           42.9                9.0 +/-    0.93      12.5 +/-    0.93  0.080 / 0.140
G13     307.4          30.2               10.2 +/-    1.90      17.8 +/-    1.90  0.080 / 0.130
G17     207.6          38.7               10.7 +/-    1.11      15.9 +/-    1.11  0.040 / 0.070
G18     77.6           24.6                8.7 +/-    0.74      17.2 +/-    0.74  0.040 / 0.080
G28     323.5          61.4                9.1 +/-    1.40      10.2 +/-    1.40  0.040 / 0.070
G30     38.0           79.2                9.2 +/-    0.57       9.4 +/-    0.57  0.040 / 0.090