PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/05-20:57:40
G01     115.7          20.4               20.1 +/-    2.23      43.7 +/-    2.23  0.110 / 0.190
G07     89.1           64.9               15.8 +/-    0.32      17.3 +/-    0.32  0.110 / 0.180
G09     177.0          22.9               20.9 +/-    1.31      42.9 +/-    1.31  0.150 / 0.220
G11     104.5          41.4               17.4 +/-    0.70      24.8 +/-    0.70  0.140 / 0.210
G13     316.0          21.9               13.1 +/-    2.07      27.6 +/-    2.07  0.030 / 0.040
G17     203.9          24.8               22.2 +/-    2.68      43.6 +/-    2.68  0.030 / 0.030
G18     90.8           22.2               14.1 +/-    2.29      29.4 +/-    2.29  0.030 / 0.030
G28     300.9          59.0               14.7 +/-    0.82      16.8 +/-    0.82  0.020 / 0.030
G30     1.6            73.1               15.6 +/-    0.33      16.3 +/-    0.33  0.170 / 0.160