PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/10-09:57:30
G01     90.7           31.6                5.6 +/-    0.61       9.5 +/-    0.61  0.040 / 0.060
G07     125.1          44.2                6.6 +/-    1.50       8.9 +/-    1.50  0.050 / 0.060
G11     68.6           38.5                3.3 +/-    0.63       4.9 +/-    0.63  0.050 / 0.120
G13     297.1          34.5                3.6 +/-    1.36       5.8 +/-    1.36  0.060 / 0.110
G17     213.8          55.4                6.5 +/-    1.50       7.8 +/-    1.50  0.050 / 0.060
G19     214.2          28.2                5.5 +/-    1.47      10.0 +/-    1.47  0.060 / 0.060
G28     349.1          61.6                2.5 +/-    0.57       2.8 +/-    0.57  0.040 / 0.050
G30     98.5           77.0                4.1 +/-    0.85       4.2 +/-    0.85  0.040 / 0.050