PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/04-02:28:00
G01     319.7          15.5                7.2 +/-    1.88      17.8 +/-    1.88  0.030 / 0.020
G08     258.5          14.7                8.3 +/-    1.85      20.8 +/-    1.85  0.030 / 0.020
G10     73.6           55.8                8.0 +/-    0.34       9.4 +/-    0.34  0.150 / 0.300
G11     304.4          23.1                9.2 +/-    0.91      18.8 +/-    0.91  0.120 / 0.300
G14     291.7          70.8                7.0 +/-    0.49       7.3 +/-    0.49  0.060 / 0.080
G18     98.6           31.9                7.3 +/-    1.01      12.2 +/-    1.01  0.050 / 0.060
G31     178.0          37.3                9.6 +/-    1.93      14.6 +/-    1.93  0.040 / 0.040
G32     354.0          70.6                6.8 +/-    0.35       7.1 +/-    0.35  0.040 / 0.040