PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/27-14:57:50
G03     210.5          57.7               10.7 +/-    0.85      12.5 +/-    0.85  0.050 / 0.080
G07     256.3          14.3               10.3 +/-    0.93      26.0 +/-    0.93  0.060 / 0.100
G09     309.8          27.0                7.9 +/-    1.37      14.7 +/-    1.37  0.120 / 0.310
G14     108.0          9.8                 8.7 +/-    3.90      24.4 +/-    3.90  0.290 / 0.410
G16     94.5           64.0                9.0 +/-    1.17       9.9 +/-    1.17  0.040 / 0.040
G22     183.9          38.5               10.4 +/-    0.93      15.5 +/-    0.93  0.040 / 0.040
G23     335.8          63.4                9.0 +/-    0.43       9.9 +/-    0.43  0.040 / 0.030
G26     53.2           42.3                8.1 +/-    1.16      11.4 +/-    1.16  0.050 / 0.040
G27     134.3          10.3               -4.2 +/-   34.34     -11.6 +/-   34.34  0.070 / 0.290