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                6.7 +/-    1.79      11.1 +/-    1.79  0.050 / 0.040
G07     127.7          43.6                9.8 +/-    0.76      13.5 +/-    0.76  0.050 / 0.040
G11     68.7           40.4                6.3 +/-    0.92       9.0 +/-    0.92  0.050 / 0.050
G13     292.6          36.2                8.8 +/-    1.69      13.7 +/-    1.69  0.030 / 0.030
G15     313.1          11.6                6.4 +/-    2.92      17.2 +/-    2.92  0.080 / 0.100
G17     216.9          54.5                9.7 +/-    0.84      11.7 +/-    0.84  0.070 / 0.090
G19     215.8          29.7                9.0 +/-    3.21      15.8 +/-    3.21  0.080 / 0.140
G28     355.4          61.5                6.5 +/-    0.96       7.3 +/-    0.96  0.110 / 0.130
G30     115.9          69.6                9.7 +/-    0.44      10.3 +/-    0.44  0.050 / 0.050