PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-12:28:00
G03     188.7          15.3                3.0 +/-    1.43       7.4 +/-    1.43  0.050 / 0.100
G07     296.8          41.0                4.7 +/-    2.36       6.8 +/-    2.36  0.050 / 0.080
G08     136.9          33.4                6.6 +/-    0.95      10.9 +/-    0.95  0.220 / 0.410
G09     318.1          71.1                4.2 +/-    0.54       4.4 +/-    0.54  0.170 / 0.170
G16     41.7           30.4                5.0 +/-    1.62       8.7 +/-    1.62  0.060 / 0.120
G23     133.0          70.8                5.7 +/-    0.46       6.0 +/-    0.46  0.100 / 0.110
G27     91.3           36.0                6.5 +/-    0.93      10.1 +/-    0.93  0.040 / 0.040
G30     278.7          16.2                4.2 +/-    2.08      10.3 +/-    2.08  0.040 / 0.040