PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/17-00:12:30
G02     205.5          44.3               11.2 +/-    0.67      15.3 +/-    0.67  0.200 / 0.060
G06     140.0          76.7               10.3 +/-    0.66      10.5 +/-    0.66  0.160 / 0.130
G12     311.7          21.3                7.8 +/-    1.25      16.6 +/-    1.25  0.030 / 0.010
G17     39.2           47.4                8.6 +/-    2.09      11.3 +/-    2.09  0.030 / 0.010
G19     15.0           60.7                8.9 +/-    1.06      10.0 +/-    1.06  0.060 / 0.030
G24     288.6          41.1                8.0 +/-    6.39      11.4 +/-    6.39  0.060 / 0.050
G28     110.1          25.4               10.4 +/-    0.91      20.1 +/-    0.91  0.090 / 0.140