PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-14:28:10
G02     219.1          58.2                9.0 +/-    1.09      10.3 +/-    1.09  0.080 / 0.060
G06     51.6           71.1                9.0 +/-    0.47       9.4 +/-    0.47  0.070 / 0.060
G12     320.2          41.6                7.8 +/-    1.19      11.0 +/-    1.19  0.050 / 0.060
G17     60.3           29.5                8.2 +/-    3.56      14.6 +/-    3.56  0.050 / 0.050
G19     36.7           51.2                8.3 +/-    2.27      10.3 +/-    2.27  0.030 / 0.030
G24     258.6          41.3                8.8 +/-    3.03      12.5 +/-    3.03  0.040 / 0.020
G28     124.0          12.6                6.9 +/-    3.36      18.2 +/-    3.36  0.040 / 0.060