PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-03:57:30
G10     245.3          21.9               12.3 +/-    2.27      25.8 +/-    2.27  0.140 / 0.340
G13     60.2           33.3                7.5 +/-    1.82      12.3 +/-    1.82  0.110 / 0.400
G15     100.5          57.7                9.5 +/-    0.83      11.0 +/-    0.83  0.050 / 0.060
G16     301.3          15.6                7.1 +/-    1.39      17.3 +/-    1.39  0.040 / 0.040
G20     273.6          60.2               10.3 +/-    1.20      11.7 +/-    1.20  0.070 / 0.100
G21     325.6          55.3                8.6 +/-    0.78      10.2 +/-    0.78  0.060 / 0.120
G26     272.7          18.1               11.0 +/-    1.90      25.5 +/-    1.90  0.030 / 0.040
G29     163.2          58.1                9.2 +/-    0.60      10.6 +/-    0.60  0.030 / 0.040