PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/25-01:58:00
G01     48.5           24.3                4.4 +/-    1.47       8.8 +/-    1.47  0.030 / 0.050
G06     178.7          25.8                8.2 +/-    1.04      15.7 +/-    1.04  0.030 / 0.050
G07     147.0          10.9                7.0 +/-    1.33      19.2 +/-    1.33  0.110 / 0.100
G11     45.0           15.9                4.2 +/-    1.83      10.2 +/-    1.83  0.100 / 0.170
G13     249.2          29.2                6.6 +/-    2.18      11.8 +/-    2.18  0.080 / 0.120
G15     280.9          15.6                5.5 +/-    1.43      13.6 +/-    1.43  0.090 / 0.140
G17     315.0          77.7                6.7 +/-    0.42       6.8 +/-    0.42  0.020 / 0.020
G19     250.8          61.9                6.5 +/-    0.67       7.3 +/-    0.67  0.030 / 0.020
G28     56.4           51.6                5.7 +/-    0.76       7.1 +/-    0.76  0.200 / 0.350
G30     149.6          35.4                9.3 +/-    1.21      14.6 +/-    1.21  0.140 / 0.250