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                6.9 +/-    0.68       7.8 +/-    0.68  0.120 / 0.310
G06     72.4           79.0                4.2 +/-    0.51       4.3 +/-    0.51  0.100 / 0.340
G12     317.4          32.3                3.4 +/-    1.60       5.7 +/-    1.60  0.030 / 0.070
G17     54.6           35.1                2.0 +/-    1.31       3.2 +/-    1.31  0.040 / 0.080
G19     37.0           50.5                2.2 +/-    0.44       2.8 +/-    0.44  0.020 / 0.030
G24     270.1          41.9                4.4 +/-    1.44       6.3 +/-    1.44  0.040 / 0.020
G28     121.2          14.9                4.6 +/-    1.08      11.4 +/-    1.08  0.070 / 0.110