PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/07-04:42:40
G02     203.2          39.2                6.8 +/-    1.33      10.0 +/-    1.33  0.120 / 0.350
G06     163.4          69.9                3.0 +/-    1.18       3.2 +/-    1.18  0.120 / 0.350
G12     308.6          15.8                0.1 +/-    2.29       0.2 +/-    2.29  0.060 / 0.170
G17     37.4           48.3                1.2 +/-    0.69       1.5 +/-    0.69  0.060 / 0.160
G19     7.7            63.5                1.4 +/-    0.60       1.5 +/-    0.60  0.030 / 0.050
G24     296.2          38.6                4.1 +/-    1.00       6.0 +/-    1.00  0.030 / 0.040
G28     105.3          29.0                3.6 +/-    0.83       6.5 +/-    0.83  0.050 / 0.080