PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-06:12:40
G03     195.0          29.0                5.3 +/-    2.68       9.6 +/-    2.68  0.080 / 0.370
G07     283.5          33.9                4.5 +/-    0.50       7.2 +/-    0.50  0.090 / 0.330
G08     144.7          22.7                7.9 +/-    1.21      16.2 +/-    1.21  0.070 / 0.120
G09     323.2          61.3                4.6 +/-    0.93       5.2 +/-    0.93  0.050 / 0.140
G16     45.4           44.1                3.4 +/-    0.60       4.7 +/-    0.60  0.060 / 0.110
G22     180.2          13.4                6.0 +/-    5.23      15.5 +/-    5.23  0.070 / 0.110
G23     53.0           83.6                3.1 +/-    0.41       3.1 +/-    0.41  0.030 / 0.030
G26     43.1           17.0                2.4 +/-    0.76       5.6 +/-    0.76  0.030 / 0.030
G27     109.4          30.1                7.4 +/-    0.85      12.9 +/-    0.85  0.040 / 0.080