PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-12:27:50
G10     272.3          40.7                7.5 +/-    0.99      10.8 +/-    0.99  0.080 / 0.120
G13     40.2           15.2                2.8 +/-    2.25       6.9 +/-    2.25  0.100 / 0.130
G15     53.7           43.4                4.3 +/-    0.36       5.9 +/-    0.36  0.060 / 0.110
G20     55.3           35.9                3.4 +/-    0.82       5.3 +/-    0.82  0.050 / 0.090
G21     27.4           75.1                4.5 +/-    0.50       4.7 +/-    0.50  0.080 / 0.210
G24     117.0          16.9                5.4 +/-    1.59      12.8 +/-    1.59  0.080 / 0.220
G27     315.5          23.5                2.5 +/-    1.45       5.0 +/-    1.45  0.050 / 0.120
G29     167.6          24.2                5.5 +/-    2.04      10.9 +/-    2.04  0.060 / 0.130
G32     205.1          14.1                2.8 +/-    2.64       7.2 +/-    2.64  0.030 / 0.040