PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/03-15:12:50
G01     233.7          23.7               10.6 +/-    1.54      21.4 +/-    1.54  0.070 / 0.150
G03     301.5          64.4                7.8 +/-    1.20       8.5 +/-    1.20  0.080 / 0.140
G14     76.5           32.5                8.3 +/-    0.82      13.7 +/-    0.82  0.040 / 0.050
G16     152.8          36.2               13.1 +/-    1.67      20.3 +/-    1.67  0.050 / 0.060
G18     209.8          14.0               11.8 +/-    5.12      30.0 +/-    5.12  0.060 / 0.110
G22     231.7          76.1                8.8 +/-    0.30       9.1 +/-    0.30  0.060 / 0.110
G23     302.1          33.9                8.7 +/-    1.00      14.0 +/-    1.00  0.080 / 0.130
G26     111.4          50.9               11.1 +/-    0.70      13.9 +/-    0.70  0.080 / 0.140
G31     42.6           38.9                4.8 +/-    0.92       7.1 +/-    0.92  0.030 / 0.030
G32     92.7           10.6                7.5 +/-    1.82      20.6 +/-    1.82  0.030 / 0.040