PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/10-10:28:00
G01     73.9           33.1                4.1 +/-    0.65       6.8 +/-    0.65  0.040 / 0.090
G07     135.7          31.8                6.8 +/-    1.06      11.5 +/-    1.06  0.040 / 0.080
G11     55.3           31.1                3.2 +/-    0.62       5.4 +/-    0.62  0.060 / 0.100
G13     280.3          37.0                5.1 +/-    0.83       7.8 +/-    0.83  0.060 / 0.100
G15     305.6          14.5                2.3 +/-    1.83       5.8 +/-    1.83  0.110 / 0.270
G17     229.8          69.0                5.0 +/-    0.85       5.3 +/-    0.85  0.090 / 0.290
G19     222.3          41.3                6.8 +/-    1.40       9.7 +/-    1.40  0.050 / 0.050
G28     15.6           59.6                2.7 +/-    0.44       3.0 +/-    0.44  0.040 / 0.050
G30     131.3          65.3                4.8 +/-    0.69       5.3 +/-    0.69  0.040 / 0.040