PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/29-04:28:00
G08     304.9          20.6                5.1 +/-    1.30      11.0 +/-    1.30  0.080 / 0.150
G10     344.0          61.6                4.9 +/-    0.68       5.4 +/-    0.68  0.100 / 0.180
G14     221.7          33.4               10.3 +/-    2.08      16.9 +/-    2.08  0.060 / 0.070
G20     40.9           60.6                9.5 +/-    1.15      10.7 +/-    1.15  0.070 / 0.080
G21     139.7          52.0                8.9 +/-    0.72      10.9 +/-    0.72  0.040 / 0.050
G24     66.2           28.7                4.2 +/-    1.03       7.6 +/-    1.03  0.030 / 0.050
G27     267.0          36.1                7.8 +/-    1.26      12.2 +/-    1.26  0.100 / 0.220
G32     229.7          60.1                7.9 +/-    2.07       9.0 +/-    2.07  0.110 / 0.200