PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/27-22:57:50
G01     127.4          11.5               10.8 +/-   24.27      29.3 +/-   24.27  0.070 / 0.070
G07     50.4           69.7               11.2 +/-    0.48      11.9 +/-    0.48  0.040 / 0.070
G08     52.3           42.4                8.3 +/-    0.32      11.6 +/-    0.32  0.070 / 0.270
G09     179.1          37.5               13.1 +/-    1.45      19.9 +/-    1.45  0.070 / 0.260
G11     122.5          34.4               12.5 +/-    1.00      20.0 +/-    1.00  0.040 / 0.040
G13     321.5          10.6               -5.4 +/-   18.77     -15.0 +/-   18.77  0.040 / 0.060
G17     200.6          12.8               16.9 +/-    5.08      44.4 +/-    5.08  0.140 / 0.350
G28     276.5          53.2               12.0 +/-    1.32      14.6 +/-    1.32  0.080 / 0.340
G30     338.6          63.2                9.6 +/-    0.69      10.7 +/-    0.69  0.060 / 0.100