PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/01-00:27:50
G10     242.5          20.9               12.8 +/-    2.15      27.6 +/-    2.15  0.140 / 0.370
G13     63.3           33.4                9.7 +/-    1.33      15.8 +/-    1.33  0.110 / 0.260
G15     105.6          56.8               12.5 +/-    0.81      14.7 +/-    0.81  0.040 / 0.060
G16     306.7          14.4                5.5 +/-    1.48      13.9 +/-    1.48  0.040 / 0.060
G20     257.8          43.8               13.6 +/-    3.00      18.7 +/-    3.00  0.090 / 0.110
G21     322.7          52.9               10.8 +/-    0.41      13.2 +/-    0.41  0.090 / 0.120
G26     278.7          18.5                9.4 +/-    1.46      21.4 +/-    1.46  0.030 / 0.040
G29     158.7          60.2               13.6 +/-    0.47      15.4 +/-    0.47  0.030 / 0.030