PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-00:42:50
G10     253.4          29.0               13.6 +/-    1.99      24.3 +/-    1.99  0.050 / 0.040
G13     50.7           27.9                9.0 +/-    1.81      16.4 +/-    1.81  0.050 / 0.050
G15     83.5           58.1               11.6 +/-    0.73      13.4 +/-    0.73  0.160 / 0.180
G16     291.0          15.6               10.6 +/-    1.23      26.1 +/-    1.23  0.110 / 0.290
G20     263.7          38.2               15.2 +/-    3.36      22.8 +/-    3.36  0.120 / 0.360
G21     336.5          61.8               11.6 +/-    0.69      12.9 +/-    0.69  0.130 / 0.360
G26     263.3          14.3               12.9 +/-    3.67      32.6 +/-    3.67  0.030 / 0.040
G29     166.1          47.4               12.8 +/-    1.00      16.7 +/-    1.00  0.030 / 0.030