PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/10-12:12:50
G01     83.8           32.7                1.6 +/-    1.05       2.7 +/-    1.05  0.060 / 0.100
G07     130.0          38.5                4.1 +/-    0.44       6.2 +/-    0.44  0.050 / 0.080
G11     62.0           35.3                2.6 +/-    0.77       4.1 +/-    0.77  0.030 / 0.020
G13     290.9          36.0                3.9 +/-    1.51       6.0 +/-    1.51  0.020 / 0.020
G15     313.0          11.3               -1.0 +/-    6.66      -2.7 +/-    6.66  0.040 / 0.060
G17     218.8          61.4                2.3 +/-    1.11       2.6 +/-    1.11  0.040 / 0.060
G19     217.1          33.7                5.6 +/-    1.58       9.1 +/-    1.58  0.170 / 0.230
G28     360.0          61.1                2.0 +/-    0.68       2.3 +/-    0.68  0.250 / 0.300
G30     115.5          73.5                3.3 +/-    0.53       3.4 +/-    0.53  0.060 / 0.040