PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-14:58:00
G01     315.5          24.6                7.5 +/-    1.05      14.8 +/-    1.05  0.150 / 0.410
G10     91.7           48.6                8.1 +/-    0.71      10.4 +/-    0.71  0.150 / 0.410
G11     297.9          24.5                7.4 +/-    2.49      14.7 +/-    2.49  0.030 / 0.050
G14     318.5          70.4                7.2 +/-    0.53       7.6 +/-    0.53  0.050 / 0.050
G22     305.2          18.2                5.9 +/-    2.37      13.7 +/-    2.37  0.080 / 0.110
G25     94.5           12.2                8.6 +/-    1.61      22.7 +/-    1.61  0.080 / 0.160
G31     172.7          52.3                9.9 +/-    1.63      12.1 +/-    1.63  0.050 / 0.050
G32     22.8           60.6                7.2 +/-    0.44       8.1 +/-    0.44  0.040 / 0.050