PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-01:42:30
G02     253.8          78.9                7.6 +/-    0.38       7.7 +/-    0.38  0.070 / 0.120
G05     169.9          19.0                7.8 +/-    2.63      17.7 +/-    2.63  0.120 / 0.090
G06     39.0           60.1                6.4 +/-    0.52       7.2 +/-    0.52  0.040 / 0.030
G12     320.8          51.8                6.8 +/-    1.49       8.3 +/-    1.49  0.040 / 0.040
G17     73.4           19.5                5.4 +/-    3.07      12.1 +/-    3.07  0.280 / 0.210
G19     59.4           36.9                6.5 +/-    1.67       9.9 +/-    1.67  0.350 / 0.350
G24     240.5          32.9                7.5 +/-    0.98      12.4 +/-    0.98  0.070 / 0.060
G25     316.8          15.9                2.9 +/-    1.41       7.0 +/-    1.41  0.090 / 0.080