PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/10-14:57:40
G02     221.1          59.8               12.1 +/-    1.69      13.7 +/-    1.69  0.050 / 0.060
G06     48.6           69.1               10.9 +/-    0.35      11.6 +/-    0.35  0.050 / 0.050
G12     320.9          43.8                8.8 +/-    0.85      12.0 +/-    0.85  0.070 / 0.080
G17     61.8           28.3                9.0 +/-    1.26      16.3 +/-    1.26  0.080 / 0.070
G19     39.4           49.9               10.6 +/-    1.16      13.4 +/-    1.16  0.040 / 0.030
G24     256.2          40.5               12.6 +/-    4.20      18.1 +/-    4.20  0.030 / 0.030
G28     125.3          11.0               12.1 +/-    3.27      33.0 +/-    3.27  0.060 / 0.040