PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-23:57:50
G02     235.1          74.4               11.3 +/-    0.62      11.7 +/-    0.62  0.040 / 0.050
G05     171.8          14.6               14.8 +/-    1.99      37.2 +/-    1.99  0.040 / 0.070
G06     41.6           60.7                9.5 +/-    0.40      10.7 +/-    0.40  0.070 / 0.110
G12     321.5          49.4               11.9 +/-    1.14      15.1 +/-    1.14  0.060 / 0.110
G17     66.9           27.1               10.2 +/-    0.91      19.1 +/-    0.91  0.140 / 0.240
G19     53.3           41.4               11.1 +/-    0.52      15.8 +/-    0.52  0.090 / 0.230
G24     248.2          36.3               14.5 +/-    1.03      22.5 +/-    1.03  0.030 / 0.040