PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-18:57:40
G07     334.9          59.1               12.5 +/-    0.48      14.4 +/-    0.48  0.030 / 0.040
G08     103.6          50.1               13.2 +/-    0.38      16.6 +/-    0.38  0.050 / 0.050
G09     204.1          78.6               13.7 +/-    0.43      13.9 +/-    0.43  0.030 / 0.020
G11     147.1          11.5               15.4 +/-    3.07      41.6 +/-    3.07  0.020 / 0.020
G16     45.0           14.8                9.3 +/-    2.09      23.1 +/-    2.09  0.070 / 0.060
G23     154.4          47.2               14.3 +/-    0.80      18.7 +/-    0.80  0.070 / 0.060
G27     61.3           35.0               11.9 +/-    1.04      18.9 +/-    1.04  0.220 / 0.190
G28     233.0          22.4               14.7 +/-    1.81      30.5 +/-    1.81  0.150 / 0.150
G30     298.9          33.0               10.6 +/-    1.76      17.5 +/-    1.76  0.060 / 0.130