PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-00:43:00
G10     253.4          29.0               13.2 +/-    2.72      23.6 +/-    2.72  0.140 / 0.530
G13     50.7           27.9                9.1 +/-    0.70      16.7 +/-    0.70  0.140 / 0.570
G15     83.5           58.1               11.8 +/-    0.66      13.6 +/-    0.66  0.040 / 0.060
G16     291.0          15.6                9.8 +/-    2.67      24.1 +/-    2.67  0.040 / 0.050
G20     263.7          38.2               10.4 +/-    0.70      15.6 +/-    0.70  0.080 / 0.110
G21     336.5          61.8               11.2 +/-    0.73      12.6 +/-    0.73  0.070 / 0.100
G26     263.3          14.3               12.4 +/-    1.77      31.5 +/-    1.77  0.030 / 0.050
G29     166.1          47.4               13.2 +/-    1.06      17.3 +/-    1.06  0.030 / 0.040