PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-05:27:50
G01     86.4           32.5                5.8 +/-    0.86       9.7 +/-    0.86  0.050 / 0.050
G07     128.3          42.3                7.7 +/-    0.85      10.8 +/-    0.85  0.050 / 0.060
G11     66.0           38.4                3.4 +/-    0.48       5.1 +/-    0.48  0.050 / 0.060
G13     292.3          36.0                5.1 +/-    0.79       8.0 +/-    0.79  0.050 / 0.070
G15     312.8          11.8                2.9 +/-    1.99       7.7 +/-    1.99  0.050 / 0.040
G17     217.1          57.6                7.4 +/-    0.64       8.6 +/-    0.64  0.040 / 0.050
G19     216.1          31.1                7.4 +/-    0.98      12.6 +/-    0.98  0.080 / 0.280
G28     356.8          61.3                3.7 +/-    1.13       4.2 +/-    1.13  0.080 / 0.200
G30     114.6          71.9                6.2 +/-    0.49       6.5 +/-    0.49  0.070 / 0.130