PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-22:57:50
G01     125.9          12.6               14.4 +/-    3.96      37.9 +/-    3.96  0.080 / 0.070
G07     56.1           69.5               11.1 +/-    0.26      11.8 +/-    0.26  0.130 / 0.070
G08     50.9           41.0                9.5 +/-    0.99      13.6 +/-    0.99  0.160 / 0.270
G09     178.9          35.6               12.9 +/-    1.04      20.3 +/-    1.04  0.180 / 0.310
G11     120.6          35.4               13.5 +/-    1.08      21.3 +/-    1.08  0.080 / 0.050
G13     321.0          12.1                7.8 +/-    1.51      20.8 +/-    1.51  0.050 / 0.050
G17     200.9          14.5               14.7 +/-    3.45      36.9 +/-    3.45  0.110 / 0.270
G28     279.4          54.1               11.4 +/-    2.85      13.7 +/-    2.85  0.150 / 0.220
G30     341.2          64.6               10.7 +/-    0.43      11.7 +/-    0.43  0.300 / 0.360