PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/17-01:12:40
G01     87.3           32.4                7.2 +/-    1.57      11.9 +/-    1.57  0.030 / 0.050
G07     127.7          43.6               10.6 +/-    1.71      14.5 +/-    1.71  0.030 / 0.060
G11     68.7           40.4                6.9 +/-    1.38      10.0 +/-    1.38  0.050 / 0.050
G13     292.6          36.2                7.3 +/-    1.34      11.3 +/-    1.34  0.050 / 0.050
G15     313.1          11.6                5.5 +/-    3.05      14.8 +/-    3.05  0.060 / 0.110
G17     216.9          54.5               10.1 +/-    1.43      12.2 +/-    1.43  0.060 / 0.120
G19     215.8          29.7                9.7 +/-    2.18      17.1 +/-    2.18  0.060 / 0.120
G28     355.4          61.5                7.0 +/-    1.59       7.9 +/-    1.59  0.080 / 0.120
G30     115.9          69.6                7.4 +/-    0.76       7.9 +/-    0.76  0.050 / 0.060