PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/17-23:12:50
G01     114.9          20.4               10.4 +/-    1.61      22.6 +/-    1.61  0.190 / 0.210
G07     95.8           60.4               10.0 +/-    1.02      11.3 +/-    1.02  0.140 / 0.230
G08     42.9           25.7                7.8 +/-    2.16      15.0 +/-    2.16  0.050 / 0.040
G09     176.3          21.9               10.2 +/-    1.13      21.5 +/-    1.13  0.060 / 0.050
G11     98.5           41.7               10.2 +/-    0.68      14.4 +/-    0.68  0.030 / 0.030
G13     315.1          23.4                6.0 +/-    1.11      12.3 +/-    1.11  0.040 / 0.030
G17     201.6          31.1               10.3 +/-    1.29      17.7 +/-    1.29  0.180 / 0.160
G18     85.5           21.7                7.7 +/-    1.53      16.2 +/-    1.53  0.090 / 0.200
G28     295.4          57.1                8.2 +/-    0.84       9.5 +/-    0.84  0.090 / 0.080
G30     354.4          72.2                8.0 +/-    0.70       8.3 +/-    0.70  0.130 / 0.130