PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/26-11:58:00
G10     300.4          52.6                3.4 +/-    1.38       4.2 +/-    1.38  0.060 / 0.060
G14     211.3          12.4               -0.1 +/-   10.06      -0.1 +/-   10.06  0.080 / 0.060
G15     45.6           24.7                2.3 +/-    2.31       4.6 +/-    2.31  0.190 / 0.450
G20     70.9           21.9                2.2 +/-    2.60       4.6 +/-    2.60  0.090 / 0.300
G21     106.2          70.8                3.4 +/-    0.72       3.6 +/-    0.72  0.080 / 0.140
G24     95.7           27.4                1.1 +/-    1.61       2.1 +/-    1.61  0.090 / 0.160
G27     296.8          35.7                5.2 +/-    2.34       8.2 +/-    2.34  0.030 / 0.030
G32     211.6          35.2                5.4 +/-    1.51       8.5 +/-    1.51  0.030 / 0.030