PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-00:12:50
G01     101.7          28.2                9.7 +/-    1.25      17.7 +/-    1.25  0.050 / 0.060
G07     114.1          54.5               10.6 +/-    0.63      12.7 +/-    0.63  0.030 / 0.050
G08     42.0           18.3                6.4 +/-    1.22      14.7 +/-    1.22  0.090 / 0.110
G11     85.6           43.7                8.8 +/-    0.91      12.1 +/-    0.91  0.090 / 0.110
G13     305.8          31.0                8.2 +/-    1.96      14.1 +/-    1.96  0.120 / 0.170
G17     208.8          41.3               11.3 +/-    0.93      16.1 +/-    0.93  0.170 / 0.150
G19     210.6          17.9                9.8 +/-    1.17      22.7 +/-    1.17  0.070 / 0.060
G28     329.9          61.7                8.1 +/-    0.44       9.1 +/-    0.44  0.050 / 0.080
G30     72.1           77.7                9.9 +/-    0.93      10.1 +/-    0.93  0.050 / 0.060