PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-20:28:10
G07     32.3           68.2               13.8 +/-    0.81      14.7 +/-    0.81  0.030 / 0.030
G08     60.7           46.2               13.3 +/-    1.88      17.7 +/-    1.88  0.030 / 0.030
G09     180.1          49.6               15.1 +/-    0.64      19.1 +/-    0.64  0.130 / 0.100
G11     127.9          28.9               16.4 +/-    1.15      29.4 +/-    1.15  0.120 / 0.110
G18     111.0          10.8               12.9 +/-    4.38      35.4 +/-    4.38  0.240 / 0.140
G23     160.6          19.9               12.3 +/-    1.81      27.1 +/-    1.81  0.180 / 0.110
G27     41.0           18.4               10.5 +/-    1.64      23.9 +/-    1.64  0.070 / 0.150
G28     257.0          42.6               15.5 +/-    2.19      21.6 +/-    2.19  0.080 / 0.150
G30     321.2          51.7               13.5 +/-    0.93      16.7 +/-    0.93  0.040 / 0.040