PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-01:27:40
G01     88.1           32.3                5.2 +/-    1.06       8.6 +/-    1.06  0.050 / 0.040
G07     127.1          44.1                6.8 +/-    0.69       9.3 +/-    0.69  0.050 / 0.040
G11     69.3           40.6                5.0 +/-    1.20       7.2 +/-    1.20  0.030 / 0.050
G13     293.3          36.0                5.0 +/-    2.33       7.7 +/-    2.33  0.030 / 0.040
G15     313.5          11.3                3.0 +/-    7.09       8.0 +/-    7.09  0.100 / 0.080
G17     216.3          54.0                7.0 +/-    0.84       8.4 +/-    0.84  0.080 / 0.100
G19     215.5          29.2                6.7 +/-    2.08      12.0 +/-    2.08  0.050 / 0.080
G28     354.2          61.5                4.3 +/-    0.92       4.8 +/-    0.92  0.080 / 0.080
G30     114.6          70.0                6.7 +/-    0.66       7.1 +/-    0.66  0.100 / 0.110