PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/26-14:27:30
G10     248.0          23.9                5.0 +/-    1.31      10.0 +/-    1.31  0.030 / 0.040
G13     57.3           32.5                4.4 +/-    0.81       7.3 +/-    0.81  0.040 / 0.050
G15     89.9           56.9                5.9 +/-    0.53       6.9 +/-    0.53  0.160 / 0.420
G16     302.2          13.9                2.3 +/-    1.15       5.8 +/-    1.15  0.220 / 0.380
G18     266.7          56.1                4.5 +/-    2.01       5.3 +/-    2.01  0.060 / 0.080
G20     37.8           54.3                3.6 +/-    0.87       4.4 +/-    0.87  0.080 / 0.090
G21     336.9          61.6                3.3 +/-    0.66       3.7 +/-    0.66  0.120 / 0.220
G26     272.7          16.5                5.0 +/-    2.10      12.0 +/-    2.10  0.130 / 0.330
G29     162.0          49.5                7.0 +/-    0.47       8.8 +/-    0.47  0.030 / 0.040