PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-04:27:20
G02     203.4          39.8                6.9 +/-    2.18      10.1 +/-    2.18  0.140 / 0.300
G06     162.0          70.7                5.4 +/-    1.15       5.7 +/-    1.15  0.160 / 0.280
G12     308.9          16.3                0.7 +/-    2.45       1.7 +/-    2.45  0.080 / 0.170
G17     37.8           48.0                2.3 +/-    0.59       3.0 +/-    0.59  0.080 / 0.160
G19     8.7            63.1                1.9 +/-    0.45       2.1 +/-    0.45  0.030 / 0.050
G24     295.4          38.9                3.8 +/-    1.21       5.6 +/-    1.21  0.030 / 0.070
G28     105.8          28.6                5.3 +/-    0.64       9.5 +/-    0.64  0.070 / 0.090