PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/29-08:27:50
G10     256.1          30.7                6.0 +/-    1.31      10.4 +/-    1.31  0.110 / 0.290
G13     48.7           26.6                4.0 +/-    2.73       7.5 +/-    2.73  0.090 / 0.280
G15     73.0           54.6                6.3 +/-    0.45       7.5 +/-    0.45  0.270 / 0.190
G16     289.8          14.6                3.2 +/-    1.95       8.1 +/-    1.95  0.130 / 0.170
G20     29.8           59.9                4.3 +/-    0.77       4.9 +/-    0.77  0.040 / 0.030
G21     343.5          65.1                5.4 +/-    0.41       5.9 +/-    0.41  0.040 / 0.040
G26     261.3          13.0                4.2 +/-    2.31      11.0 +/-    2.31  0.040 / 0.040
G27     322.0          10.7              -11.0 +/-   19.21     -30.2 +/-   19.21  0.030 / 0.040
G29     166.1          42.5                7.5 +/-    0.67      10.5 +/-    0.67  0.070 / 0.080