PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/02-16:58:00
G03     201.6          48.9               11.5 +/-    0.42      14.7 +/-    0.42  0.040 / 0.040
G07     262.6          19.2                9.6 +/-    1.51      21.5 +/-    1.51  0.040 / 0.040
G09     313.4          33.2                7.8 +/-    1.68      12.8 +/-    1.68  0.050 / 0.140
G16     75.4           62.8               11.0 +/-    0.58      12.2 +/-    0.58  0.070 / 0.140
G22     183.2          31.7               10.0 +/-    1.80      16.9 +/-    1.80  0.060 / 0.080
G23     343.8          69.0                9.2 +/-    0.49       9.8 +/-    0.49  0.080 / 0.110
G26     47.9           36.2                9.0 +/-    1.12      13.9 +/-    1.12  0.050 / 0.040
G27     128.1          15.7                9.9 +/-    2.10      24.2 +/-    2.10  0.050 / 0.040