PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/25-10:43:10
G07     342.5          61.4                5.2 +/-    0.58       5.8 +/-    0.58  0.120 / 0.320
G08     101.0          52.9                5.9 +/-    0.37       7.2 +/-    0.37  0.270 / 0.260
G09     189.9          72.3                6.5 +/-    0.54       6.8 +/-    0.54  0.040 / 0.040
G11     144.5          15.2                2.7 +/-    2.82       6.8 +/-    2.82  0.030 / 0.040
G23     154.7          35.6                5.5 +/-    0.97       8.7 +/-    0.97  0.100 / 0.090
G27     53.9           31.1                4.0 +/-    1.56       6.8 +/-    1.56  0.070 / 0.140
G28     236.9          25.3                8.1 +/-    2.31      15.8 +/-    2.31  0.030 / 0.040
G30     304.0          37.4                5.2 +/-    1.43       7.9 +/-    1.43  0.030 / 0.030