PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-02:28:00
G02     67.0           26.1                9.1 +/-    2.95      17.4 +/-    2.95  0.090 / 0.170
G05     48.7           51.6                9.2 +/-    0.75      11.4 +/-    0.75  0.100 / 0.120
G12     184.3          25.6               12.9 +/-    1.36      24.9 +/-    1.36  0.120 / 0.210
G13     119.7          20.9               11.9 +/-    1.75      25.7 +/-    1.75  0.080 / 0.170
G15     157.8          20.2               13.0 +/-    1.03      28.5 +/-    1.03  0.110 / 0.120
G21     279.5          23.7               10.3 +/-    0.94      20.8 +/-    0.94  0.070 / 0.150
G25     224.6          45.0               11.4 +/-    2.80      15.4 +/-    2.80  0.030 / 0.050
G29     340.0          66.7                9.8 +/-    0.72      10.6 +/-    0.72  0.040 / 0.050