PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/21-00:57:50
G01     86.5           32.5                4.9 +/-    1.29       8.1 +/-    1.29  0.050 / 0.040
G07     128.2          43.1                8.3 +/-    0.48      11.5 +/-    0.48  0.050 / 0.040
G11     68.1           40.3                5.8 +/-    0.74       8.4 +/-    0.74  0.060 / 0.080
G13     291.8          36.3                7.1 +/-    1.90      11.1 +/-    1.90  0.070 / 0.070
G15     312.6          11.8                5.9 +/-    2.77      15.7 +/-    2.77  0.040 / 0.040
G17     217.4          54.9                8.6 +/-    1.07      10.2 +/-    1.07  0.040 / 0.050
G19     216.1          30.2                7.9 +/-    2.82      13.7 +/-    2.82  0.040 / 0.050
G28     356.6          61.4                5.1 +/-    0.78       5.8 +/-    0.78  0.040 / 0.060
G30     117.1          69.3                8.3 +/-    0.39       8.8 +/-    0.39  0.080 / 0.070