PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-03:27:50
G02     203.0          38.5                7.0 +/-    0.81      10.4 +/-    0.81  0.060 / 0.100
G06     162.0          69.8                6.4 +/-    0.27       6.8 +/-    0.27  0.080 / 0.090
G12     308.3          15.5                2.0 +/-    1.40       4.9 +/-    1.40  0.090 / 0.260
G17     36.0           49.5                3.4 +/-    1.21       4.3 +/-    1.21  0.160 / 0.300
G19     5.8            64.0                3.9 +/-    0.62       4.3 +/-    0.62  0.030 / 0.030
G24     296.7          38.4                2.8 +/-    2.03       4.2 +/-    2.03  0.030 / 0.030
G28     104.7          29.4                5.6 +/-    1.09      10.0 +/-    1.09  0.030 / 0.040