PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-09:43:10
G02     200.0          22.4                8.1 +/-    1.40      16.9 +/-    1.40  0.060 / 0.080
G06     175.0          51.7               11.4 +/-    0.67      14.0 +/-    0.67  0.050 / 0.100
G13     228.0          12.7                6.4 +/-    4.76      16.7 +/-    4.76  0.070 / 0.130
G17     25.0           58.0                6.1 +/-    0.47       7.1 +/-    0.47  0.070 / 0.120
G19     331.0          71.0                6.7 +/-    0.66       7.1 +/-    0.66  0.020 / 0.040
G24     310.6          28.9                3.7 +/-    1.00       6.7 +/-    1.00  0.020 / 0.040
G28     89.5           38.7                7.7 +/-    0.50      11.5 +/-    0.50  0.040 / 0.050
G30     157.0          13.5                5.9 +/-    2.91      15.3 +/-    2.91  0.040 / 0.040