PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/27-23:43:10
G10     245.2          22.0               12.5 +/-    3.06      26.3 +/-    3.06  0.130 / 0.640
G13     60.1           33.1                8.5 +/-    0.55      14.1 +/-    0.55  0.140 / 0.530
G15     105.4          58.3               10.4 +/-    0.57      12.0 +/-    0.57  0.080 / 0.180
G16     300.8          15.9                7.6 +/-    2.37      18.4 +/-    2.37  0.110 / 0.200
G20     252.7          26.5                8.8 +/-    0.92      16.6 +/-    0.92  0.040 / 0.070
G21     324.9          54.8                9.1 +/-    0.78      10.9 +/-    0.78  0.030 / 0.070
G26     272.7          18.1               10.4 +/-    0.50      24.0 +/-    0.50  0.040 / 0.040
G29     163.2          58.8               10.0 +/-    1.00      11.5 +/-    1.00  0.030 / 0.050