PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/17-01:27:40
G02     199.4          20.9                9.4 +/-    1.94      20.3 +/-    1.94  0.040 / 0.080
G06     172.7          51.4               10.7 +/-    0.42      13.2 +/-    0.42  0.040 / 0.060
G13     228.9          14.1               10.5 +/-    1.32      26.8 +/-    1.32  0.030 / 0.030
G17     15.2           63.2                7.7 +/-    0.80       8.5 +/-    0.80  0.030 / 0.040
G19     317.3          71.2                8.0 +/-    0.48       8.4 +/-    0.48  0.070 / 0.100
G24     311.4          28.0                8.1 +/-    1.63      14.7 +/-    1.63  0.070 / 0.110
G28     86.7           40.1                8.0 +/-    1.01      11.6 +/-    1.01  0.080 / 0.280
G30     156.0          13.4                9.0 +/-    1.44      23.1 +/-    1.44  0.120 / 0.530