PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-13:43:10
G01     317.3          21.5                6.4 +/-    2.96      13.5 +/-    2.96  0.130 / 0.230
G08     257.0          10.9                3.6 +/-    3.36       9.9 +/-    3.36  0.110 / 0.300
G10     86.4           50.9                6.4 +/-    1.15       7.9 +/-    1.15  0.030 / 0.040
G11     301.3          23.2                5.9 +/-    1.13      12.0 +/-    1.13  0.040 / 0.040
G14     304.8          70.1                6.5 +/-    0.52       6.9 +/-    0.52  0.050 / 0.050
G22     303.6          16.1                4.2 +/-    1.59      10.2 +/-    1.59  0.040 / 0.040
G25     98.1           10.5                4.8 +/-   21.64      13.3 +/-   21.64  0.240 / 0.370
G31     173.6          48.3                8.8 +/-    0.94      11.3 +/-    0.94  0.200 / 0.280
G32     17.7           63.3                6.3 +/-    0.56       6.9 +/-    0.56  0.030 / 0.030