PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/16-21:28:00
G07     337.8          59.9               10.3 +/-    0.33      11.7 +/-    0.33  0.190 / 0.240
G08     97.3           50.9               11.4 +/-    0.71      14.2 +/-    0.71  0.130 / 0.220
G09     193.0          75.0               10.6 +/-    0.93      11.0 +/-    0.93  0.080 / 0.080
G11     144.9          13.4               12.5 +/-    2.21      32.3 +/-    2.21  0.060 / 0.070
G16     46.1           11.4                8.1 +/-    1.19      21.9 +/-    1.19  0.040 / 0.050
G23     155.9          44.7               12.0 +/-    0.67      16.2 +/-    0.67  0.030 / 0.030
G27     58.4           34.0                8.6 +/-    2.49      13.9 +/-    2.49  0.040 / 0.020
G28     235.4          25.5               11.9 +/-    2.85      23.0 +/-    2.85  0.030 / 0.020
G30     300.8          34.2                9.1 +/-    1.32      14.7 +/-    1.32  0.260 / 0.490