PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/07-00:57:20
G02     206.2          46.4               12.5 +/-    0.70      16.6 +/-    0.70  0.100 / 0.110
G06     133.9          77.9               12.0 +/-    0.68      12.2 +/-    0.68  0.060 / 0.100
G12     312.5          22.6                9.2 +/-    1.83      19.0 +/-    1.83  0.040 / 0.040
G17     41.6           45.6               10.2 +/-    1.42      13.7 +/-    1.42  0.040 / 0.040
G19     18.5           59.4               10.0 +/-    0.69      11.5 +/-    0.69  0.020 / 0.030
G24     286.3          41.5                4.8 +/-    3.26       6.8 +/-    3.26  0.030 / 0.020
G28     111.7          24.1               11.3 +/-    1.33      22.6 +/-    1.33  0.090 / 0.170