PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/16-23:12:50
G01     37.9           10.2                7.1 +/-    4.14      19.7 +/-    4.14  0.120 / 0.460
G02     199.3          16.9               12.5 +/-    2.68      29.8 +/-    2.68  0.110 / 0.360
G06     172.7          48.2               10.8 +/-    0.99      14.0 +/-    0.99  0.050 / 0.020
G13     231.5          16.6               13.7 +/-    2.58      32.8 +/-    2.58  0.040 / 0.030
G17     5.7            67.2                9.2 +/-    0.33       9.9 +/-    0.33  0.110 / 0.060
G19     302.2          71.0                9.4 +/-    0.79       9.9 +/-    0.79  0.120 / 0.060
G24     313.2          25.6                9.0 +/-    1.17      17.3 +/-    1.17  0.210 / 0.050
G28     82.3           42.3               10.0 +/-    1.17      14.1 +/-    1.17  0.100 / 0.050
G30     155.8          18.0               12.7 +/-    3.22      29.5 +/-    3.22  0.040 / 0.060