PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/02-14:28:00
G03     216.7          61.8               12.2 +/-    0.66      13.7 +/-    0.66  0.170 / 0.540
G07     253.1          11.6                6.1 +/-    2.40      16.4 +/-    2.40  0.180 / 0.490
G09     307.7          23.8                6.8 +/-    1.53      13.7 +/-    1.53  0.030 / 0.060
G14     104.7          12.8               10.4 +/-    2.54      27.2 +/-    2.54  0.030 / 0.060
G16     105.6          63.3               10.5 +/-    0.99      11.6 +/-    0.99  0.100 / 0.430
G22     185.5          43.3               11.7 +/-    2.29      16.1 +/-    2.29  0.090 / 0.510
G23     331.5          60.0                8.5 +/-    1.24       9.6 +/-    1.24  0.040 / 0.090
G26     57.1           45.4                7.9 +/-    0.74      10.6 +/-    0.74  0.040 / 0.080
G31     57.1           12.0                7.2 +/-    1.70      19.1 +/-    1.70  0.030 / 0.050