PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-12:58:10
G03     210.8          56.7                8.8 +/-    1.14      10.4 +/-    1.14  0.060 / 0.220
G07     257.6          15.4                7.6 +/-    1.80      18.8 +/-    1.80  0.060 / 0.250
G09     310.9          29.1                5.2 +/-    1.29       9.3 +/-    1.29  0.100 / 0.090
G16     88.9           63.7                7.4 +/-    0.55       8.2 +/-    0.55  0.080 / 0.100
G22     185.2          38.2                7.7 +/-    1.50      11.5 +/-    1.50  0.040 / 0.060
G23     336.2          63.9                6.6 +/-    0.70       7.3 +/-    0.70  0.040 / 0.060
G26     51.7           40.7                6.9 +/-    0.65      10.0 +/-    0.65  0.030 / 0.050
G27     133.3          11.3                4.7 +/-   26.08      12.7 +/-   26.08  0.030 / 0.050