PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-10:27:40
G10     248.6          24.5                3.7 +/-    1.20       7.4 +/-    1.20  0.030 / 0.050
G13     56.4           31.8                5.6 +/-    0.53       9.4 +/-    0.53  0.040 / 0.050
G15     88.6           56.9                6.8 +/-    0.80       8.0 +/-    0.80  0.030 / 0.040
G16     299.3          14.9                1.7 +/-    2.10       4.4 +/-    2.10  0.030 / 0.060
G20     35.6           56.4                5.8 +/-    0.48       6.8 +/-    0.48  0.080 / 0.390
G21     333.5          60.0                5.5 +/-    0.81       6.3 +/-    0.81  0.100 / 0.340
G26     270.1          16.5                5.3 +/-    2.17      12.8 +/-    2.17  0.050 / 0.120
G29     163.4          51.1                7.6 +/-    1.48       9.5 +/-    1.48  0.050 / 0.110