PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-23:27:40
G01     122.5          15.4               14.3 +/-    3.12      35.3 +/-    3.12  0.040 / 0.080
G07     68.9           68.4                9.7 +/-    1.03      10.4 +/-    1.03  0.040 / 0.070
G08     47.9           37.3                6.9 +/-    0.79      10.5 +/-    0.79  0.040 / 0.060
G09     178.3          31.1               12.4 +/-    2.03      21.3 +/-    2.03  0.040 / 0.060
G11     115.6          37.8               13.3 +/-    1.29      20.0 +/-    1.29  0.090 / 0.240
G13     319.7          15.5                7.3 +/-    2.72      17.9 +/-    2.72  0.100 / 0.220
G17     201.5          18.9               13.0 +/-    1.73      29.4 +/-    1.73  0.120 / 0.230
G28     286.6          56.1               10.3 +/-    0.73      12.2 +/-    0.73  0.100 / 0.160
G30     348.8          68.2                9.7 +/-    0.80      10.4 +/-    0.80  0.030 / 0.040