PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-09:43:00
G01     319.8          15.7                2.1 +/-    4.49       5.1 +/-    4.49  0.040 / 0.060
G08     262.9          14.4                4.4 +/-    1.39      11.2 +/-    1.39  0.040 / 0.060
G10     75.5           54.7                3.8 +/-    0.58       4.5 +/-    0.58  0.160 / 0.450
G11     306.4          20.8                3.7 +/-    3.96       7.9 +/-    3.96  0.160 / 0.310
G14     279.6          66.8                3.5 +/-    0.47       3.8 +/-    0.47  0.190 / 0.360
G18     307.4          37.6                2.8 +/-    2.04       4.3 +/-    2.04  0.200 / 0.380
G22     300.6          12.9                3.5 +/-    1.95       9.2 +/-    1.95  0.040 / 0.050
G27     225.4          10.2                5.6 +/-    3.98      15.4 +/-    3.98  0.050 / 0.040
G31     174.8          41.0                5.6 +/-    0.70       8.1 +/-    0.70  0.110 / 0.310
G32     6.5            68.3                4.4 +/-    0.78       4.7 +/-    0.78  0.080 / 0.280