PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-03:27:40
G02     199.7          23.5                7.9 +/-    3.14      15.9 +/-    3.14  0.070 / 0.080
G06     173.3          53.2                8.2 +/-    0.60       9.9 +/-    0.60  0.050 / 0.090
G13     227.3          12.5                3.2 +/-    5.14       8.4 +/-    5.14  0.040 / 0.040
G17     20.7           60.3                6.0 +/-    1.24       6.8 +/-    1.24  0.050 / 0.040
G19     327.4          70.9                4.5 +/-    1.26       4.8 +/-    1.26  0.040 / 0.050
G24     310.0          29.6                3.5 +/-    1.22       6.1 +/-    1.22  0.040 / 0.040
G28     89.6           38.6                6.0 +/-    1.22       8.9 +/-    1.22  0.170 / 0.180
G30     155.9          10.1                6.6 +/-    3.11      18.3 +/-    3.11  0.230 / 0.280