PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/19-10:42:50
G02     201.2          18.3                5.7 +/-    2.25      13.0 +/-    2.25  0.090 / 0.190
G06     170.1          54.2                7.6 +/-    1.02       9.2 +/-    1.02  0.140 / 0.210
G13     226.8          13.2                6.2 +/-    2.78      16.1 +/-    2.78  0.080 / 0.090
G17     24.7           58.1                5.2 +/-    0.37       6.0 +/-    0.37  0.080 / 0.100
G19     310.0          70.1                4.4 +/-    0.68       4.7 +/-    0.68  0.170 / 0.640
G24     308.1          32.4                1.8 +/-    2.05       3.1 +/-    2.05  0.250 / 0.540
G28     86.9           40.8                6.0 +/-    0.76       8.6 +/-    0.76  0.040 / 0.040
G30     157.7          16.2                5.0 +/-    1.79      12.0 +/-    1.79  0.070 / 0.040