PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/14-04:57:40
G02     213.2          59.8                6.1 +/-    0.98       6.9 +/-    0.98  0.150 / 0.380
G06     72.4           79.0                4.1 +/-    0.58       4.1 +/-    0.58  0.160 / 0.340
G12     317.4          32.3                2.6 +/-    1.73       4.3 +/-    1.73  0.020 / 0.020
G17     54.6           35.1                3.1 +/-    2.21       4.9 +/-    2.21  0.020 / 0.030
G19     37.0           50.5                2.6 +/-    1.80       3.2 +/-    1.80  0.100 / 0.090
G24     270.1          41.9                4.3 +/-    2.83       6.1 +/-    2.83  0.070 / 0.150
G28     121.2          14.9                5.3 +/-    1.98      13.3 +/-    1.98  0.050 / 0.080