PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/14-09:27:50
G01     66.4           32.3                5.2 +/-    1.87       8.7 +/-    1.87  0.050 / 0.040
G07     139.4          26.5                6.8 +/-    0.99      12.8 +/-    0.99  0.040 / 0.030
G11     50.4           26.9                2.7 +/-    2.16       5.1 +/-    2.16  0.070 / 0.110
G13     269.2          37.2                6.1 +/-    2.70       9.3 +/-    2.70  0.060 / 0.130
G15     302.7          14.0                2.5 +/-    1.16       6.5 +/-    1.16  0.080 / 0.110
G17     243.4          74.5                7.1 +/-    0.22       7.4 +/-    0.22  0.080 / 0.130
G18     44.8           14.9                2.6 +/-    1.19       6.5 +/-    1.19  0.090 / 0.230
G19     226.6          41.5                7.0 +/-    2.17       9.9 +/-    2.17  0.110 / 0.230
G28     23.8           58.9                6.3 +/-    1.18       7.2 +/-    1.18  0.080 / 0.120
G30     139.5          60.0                6.7 +/-    0.38       7.6 +/-    0.38  0.100 / 0.090