PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/17-00:42:50
G02     213.1          58.5               10.2 +/-    0.62      11.7 +/-    0.62  0.070 / 0.070
G06     67.9           77.0                8.5 +/-    0.37       8.7 +/-    0.37  0.100 / 0.060
G12     317.5          32.9                6.9 +/-    1.28      11.4 +/-    1.28  0.040 / 0.020
G17     51.8           38.3                9.5 +/-    1.68      14.3 +/-    1.68  0.040 / 0.010
G19     34.7           51.8                9.1 +/-    1.65      11.2 +/-    1.65  0.100 / 0.030
G24     269.9          42.1               10.4 +/-    2.28      14.6 +/-    2.28  0.100 / 0.030
G28     120.7          15.6               13.3 +/-    1.43      32.6 +/-    1.43  0.110 / 0.320